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I. Listening Comprehension (25points)
Part Two: Listening Comprehension Section A (5points)
Directions: In this section, you will hear 5 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only ONCE. After each conversation there will be a pause. During the pause, you should read the four possible answers marked A, B,C and D and choose the best answer.
大题1
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Glossary
1.
? A. The session might be canceled.
? B. She doesn't think it will snow.
? C. She'll probably be too tired to walk to the session.
? D. The location of the session has been changed.
2.
? A. The job is turning into an excellent opportunity for her.
? B. She refused the position because of the low salary.
? C. She's looking forward to meeting her new colleagues.
? D. The job's short hours make it impossible for her to refuse.
3.
? A. His brother doesn't want to transfer.
? B. He hasn't talked to his brother since he transferred.
? C. He doesn't think his brother should transfer.
? D. He hadn't heard the news about his brother.
4.
? A. She thinks Mary is too critical.
? B. She wants to know what the man thinks.
? C. She thinks the man is too sensitive.
? D. She doesn't know how to react.
5.
? A. If the woman has taken other classes on personal finances. ? B. Which seminar the woman wants to sign up for.
? C. If the woman keeps money at the bank.
? D. Where the woman learned about the seminar.
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only ONCE. After you hear a question, you should choose the best answer from the four choices marked A, B, C and D.
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I. Listening Comprehension (25points)
Part Two: Listening Comprehension Section B (10 points)
Passage One
Questions 6 to 8 are based on the passage you have just heard.
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Glossary
6.
? A. Both the man and woman are well-educated.
? B. Decisions are made by the man and woman together.
? C. Husband and wife share housework.
? D. Both the man and woman are financially secure.
7.
? A. Life becomes difficult for the woman and her children.
? B. The man, rather than the woman, remarries soon.
? C. The man is responsible for the welfare of his children.
? D. The children become homeless.
8.
? A. Remarriage cause new troubles in the household.
? B. Children are unhappy in the new family.
? C. Remarriages often end up in failure.
? D. The mother cannot get along with her stepchildren.
Passage Two
Questions 9-11 are based on the passage you have just heard.
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Glossary
9.
? A. Who should take care of the child at home.
? B. When the child would completely recover.
? C. What Dr. Mayer's instructions exactly were.
? D. Whether they should take the child home.
10.
? A. She encourages them to ask questions when in doubt.
? B. She asks them to repeat what they are supposed to do.
? C. She has them act out what they are to do at home.
? D. She makes them write down all her instructions.
11.
? A. It lacks the stability of the printed word.
? B. It facilitates interpersonal communication.
? C. It contains many grammatical errors.
? D. It is heavily dependent on the context.
Passage Three
Questions 12-15 are based on the passage you have just heard.
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Glossary
12.
? A. The invention of the zipper and how it works.
? B. The inventors of the zipper and their friendship and cooperation. ? C. The real inventor of the zipper.
? D. The difficult job of inventing and marketing the zipper.
13.
? A. That it was blue in color.
? B. That it was totally unexpected.
? C. That it was not practical.
? D. That it was excellent in quality.
14.
? A. Its quality was good enough for the army.
? B. It remained intact after the tests.
? C. The slide-fastener was the first thing to burst open.
? D. The army was very thorough in testing its quality.
15.
? A. The invention of the zipper was no plain sailing but its marketing was.
? B. It was only by a stroke of luck that the zipper found its way into a wider market.
? C. At least three inventors worked for the perfection of the zipper.
? D. The slide-fastener acquired its present name only after it was used in the manufacturing of army suits.
Task1
大题1
Glossary
2. I know this has been a shock to you but you must _____ yourself
_____ and face it.
? A. pull up
? B. pull together
? C. pull out
? D. pull in
10. The local public security bureau will tell you what the ____ is for getting a passport．
? A. process
? B. procedure
? C. project
? D. Program
11. The secretary_____ the foreign minister____ an interview he was to give that afternoon.
? A. passed．．．for
? B. reassured．．．about
? C. reminded．．．of
? D. consulted．．．about
12. His testimony is of no _______ to the case.
? A. substance
? B. relation
? C. connection
? D. relevance
13. It was a shrewd move ______ to buy the house just before property prices started to rise.
? A. on record
? B. on her part
? C. at hand
? D. at her
14. Whenever any new invention is put forward，those for it and those against it can always find medical men to approve or ______ it.
? A. consent
? B. confirm
? C. consult
? D. condemn
15. The food was divided ______ according to the age and size of
children.
? A. proportionally
? B. sufficiently
? C. equally
? D. adequately
16. A sound of hammering came from the workshop，and of ______ from the knife sharpener's shop．
? A. grinding
? B. squeezing
? C. groaning
? D. splashing
17. It is usually the case that people seldom behave in a _____ way when in a furious state．
? A. rational
? B. credible
? C. legal
? D. stable
18. In case of poisoning，immediately give large quantities of soapy or salty water in order to ____ vomiting.
? A. clean
? B. control
? C. stop
? D. induce
19. At one time the Democratic Party was considered to be a party
_____ state rights，and the Republican Party，a party representing the Interests of business and industry．
? A. stand out
? B. standing by
? C. stand up to
? D. standing up for
20. To survive in the intense trade competition between countries，we must ____ the quality and variety of our products to the demands of the world market．
? A. guarantee
? B. gear
? C. enhance
? D. improve
21. She is one of the few people here I can understand properly，she pronounces all her words so ______.
? A. distinctly
? B. distinguishably
? C. exactly
? D. distinctively
22．Some bankers want the legislation to be passed to ______ the growth of foreign banks in California.
? A. inhibit
? B. restrain
? C. suppress
? D. limit
24．The most important environmental influence on fish is；water temperature，for fish tend to ____ the temperature of their surroundings．
? A. take on
? B. take up
? C. take down
? D. take to
25．The information about what is needed is provided to the producers by the rate of _____.
? A. transportation
? B. advertisement
? C. production
? D. consumption
26．When a space shuttle has accomplished its ____，it will be ready for another trip in about two weeks．
? A. commission
? B. angel
? C. mission
? D. responsibility
27. Relative humidity is the amount of water vapour the air contains at a certain temperature ___ with the amount it could hold at that temperature．
? A. to compare
? B. compared
? C. compares
? D. comparing
28. It is easy to blame the decline of conversation on the pace of modern life and on the vague changes _____ place in our
ever-changing world．
? A. taken
? B. taking
? C. to take
? D. take
29. This is so difficult a problem that the scientist is known to ____ it for about ten years．
? A. have worked on
? B. be working on
? C. work on
? D. have been working on
30. Stress is a natural part of everyday life and there is no way you can
avoid it, ____ you can avoid being hungry．
? A. no less than
? B. much more than
? C. no more than
? D. any more than
Part One:Error Correction(10 points)
Passage 1
Today we will discuss further that period when reason was lost to romance, so to speak: the Romantic Age in English literature.
We have already seen that elsewhere on the continent --- France and Germany in particular --- there was a definite Romantic movement, complete with periodicals and publishers, philosophers, and courses of university lectures. Unlike the French and Germans, the English romantics of this period were strong individualists who did not see themselves as cooperating in a definite movement. So, what we had in England at the time could be called a mere drift towards romantic writing.
This period in English literature, which occurred from approximately the 1770's ending to about 1830, is often called the Romantic Revival. This is actually a misnomer since, in fact, noting was received. On the contrary, during this period the typical 18th-century judgments of the value of medieval and Elizabethan literature were sharply reversed, as was that century's opinion of itself. Although much from the more distant past was rediscovered by romantic poets and critics, this did not constitute a return in spirit to these earlier ages. 1. What is the main idea of the passage?
? A. The history of
English literature.
? B. English
Romantic literature.
? C. French and
German literature.
? D. Famous
Romantic writers.
2. When did the Romantic age in English literature occur?
? A. From about
1830 to the end of the
19th century.
? B. In medieval
times.
? C. In the 18th
century.
Rather, the Romantics were consciously expressing a new age, and a new spirit and outlook.
While some of the great literature of the English language was produced in this age, it was by no means the greatest. Nor was this age great at all in some forms of literature --- namely drama, the novel and biography. Its greatness lay in poetry, in miscellaneous prose, in the essay, and in very personal occasional criticism.
Now, let's take a look at some of the most influential English romantic writers of this period.
? D. From the late
18th century to about
1830.
3. The Romantic period was known in England as
_________.
? A. the Romantic
Revival
? B. the New Age
? C. the Age of
Reason
? D. the Elizabethan Period
4. What were the English Romantic writers like according to the passage? ? A. They were
highly politically
conscious.
? B. They were
reviving literary values
of earlier ages.
? C. They adhered
to the typical
18th-century literary
judgments.
? D. They were
individualists
expressing a new spirit
and outlook.
5. Which type of literature was not great in England during the Romantic period? ? A. Criticism.
? B. Poetry.
? C. The novel.
? D. The essay.
Passage 2
Within fifteen years Britain and other nations should be well on with the building of huge industrial complexes for the recycling of waste. The word rubbish could lose its meaning because everything which goes into the dumps (垃圾堆) would be made into something useful. Even the most dangerous and unpleasant wastes would provide energy if noting else.
The latest project is to take a city of around half a million inhabitants and discover exactly what raw materials go into it and what go out. The aim is to find out how much of these raw materials could be provided if a plant for recycling waste were built just outside the city. 6. The phrase "be well on with．．．'' (Line 1, Para.1) most probably means
_________.
? A. get ready to
start
? B. put an end to
? C. have completed what was started
? D. have achieved
a great deal in
This plant would recycle not only metal such as steel, lead and copper, but also paper and rubber as well. Another new project is being set up to discover the best ways of sorting and separating the rubbish. When this project is complete, the rubbish will be processed like this: first it will pass through sharp metal bars which will tear open the plastic bags in which rubbish is usually packed; then it will pass through a powerful fan to separate the lightest elements from the heavy solids; after that grounders and rollers will break up everything that can be broken. Finally, the rubbish will pass under magnets, which will remove the bits of iron and steel; the rubber and plastic will then be sorted out in the final stage.
The first full-scale giant recycling plants are, perhaps, fifteen years away. Indeed, with the growing cost of transporting rubbish to more distant dumps, some big cities will be forced to build their own recycling plants before long. 7. What is NOT mentioned as
a part of the recycling process described in Paragraph 3?
? A. Sharpening
metal bars.
? B. Separating light
elements from the
heavy ones.
? C. Sorting out
small pieces of metal.
? D. Breaking up
whatever is breakable.
8. What's the main reason for big cities to build their own recycling plants?
? A. To protect the
environment from
pollution.
? B. To get big
profits from those
plants.
? C. To deal with
wastes in a better way. ? D. To get raw
materials locally.
9. The first full-scale huge recycling plants
___________.
? A. began to
operate fifteen years
ago
? B. will probably be in operation in fifteen
years
? C. will be built
fifteen years later
? D. will probably
take less than fifteen
years to build
10. The passage is mainly about _______.
? A. the protection of city environment
? B. a cheap way to get energy
? C. the location of
recycling plants
? D. new ways of
recycling wastes
中考复习试题 20** 年中考物理模拟试题 1 第 1 卷（选择题） 注意事项： 本试卷分试题卷和答题卡两部分，请将答案答在答题卡上每题对应的答题区域内，答在试题卷上 无效．考试结束，请将本试题卷和答题卡一并上交． 一、选择题（共 10 小题，每小题只有一个符合题意的选项，请将这个选项前面 的字母代号用2B 铅笔在答题卡上填涂．每 小题 2 分，计 20 分） 题号 1 2 3 4 5 6 7 8 9 10 答案 1．一种新型保险柜安装有声纹锁，只有主人说出事先设定的暗语才能打开，别人即使说出暗语也打 不开锁．这种声纹锁辨别主人声音的依据是（） A．音调 B ．音色 C ．响度 D ．声速 2.图中的几种用电器的额定功率最接近1000 W 的是 （ ） 3．嫦娥一号承载着中华民族千年的奔月梦想从西昌成功发射，精确入轨；11 月 5 日，嫦娥一号成功 “牵手”月球，成为中国第一颗月球卫星。下列说法中不正确的是（） A．火箭发射时燃气燃烧产生的内能转化为火箭的机械能 B．火箭发射上升时动能转化它的重力势能 C．围绕月球作匀速圆周运动机械能守恒 D．卫星内部工作系统所需的能量由卫星两翼的太阳能电池板提供 4．发电机和电动机的相继问世，使电能的大规模生产和利用成为现实，人类社会进入了电气化的时 代．如图所示的四幅图，其中属于电磁感应现象实验图及其应用图的是（） A ．①③
B ．① ④ C．②③ D．② ④ 5、如图所示的压路机，关于它涉及到的物理知识，下列说法中错误的是（） A．碾子由钢铁制成，利用了钢铁硬度大的特性
中考复习试题B．碾子质量很大，是为了增大对路面的压强 C．碾子很粗很宽，是为了减小对路面的压强 D．橡胶轮胎外表制有花纹，是为了增大与路面的摩擦6.如图所示的各种事例中，跟大气压无关的是（） 水杯倒置水没流出用滴管吸取 药液 用吸盘挂钩挂 物品 用锋利的菜 刀切菜B 图 1 D A C B C D 7．汶川地震中，滚滚的山石挡住了道路。增援人员要用撬棒撬开 山石，分别沿如图所示的四个方向用力，其中最省力的是（） A．沿 F 方向B．沿 F 方向C ．沿 F 方向 D ．沿 F 方向 8.夏天的早晨，树叶上常常会有一些露珠．透过这些露珠看到的叶脉会更清楚，这是由于露珠相当于 一个“凸透镜” ，使叶脉放大了．这种情形下，叶脉应该位于“凸透镜”的（）Ａ．焦距以内Ｂ．焦距和二倍焦距之间 Ｃ．二倍焦距处Ｄ．二倍焦距以外 9．下列关于四季美景的描述中，属于凝华现象的是（） Ａ．春天，雨笼山峦Ｂ．夏天，雾绕群峰 Ｃ．秋天，霜打枝头Ｄ．冬天，冰封谷底 10. 关于能源．信息和材料，下列说法正确的是（） Ａ．核能是可再生能源Ｂ．光电池和 VＣＤ光碟都应用了磁性材料Ｃ．光导纤维是利用超声波来传递信息的Ｄ．移动通信是利用微波传递信号的 第Ⅱ卷（非选择题） 题号一 题二 题 三 题 四 题 总 分 得分 二、填空题（共 4 小题，每空 1 分，计 8 分） 1、仔细分析右表中的数据，你会发现声音传播的速度与介质种类和等因素有关。成语“悦 空气（ 15℃）空气 （几种物质中的 声速25℃） v（m/s） 软木煤油 （ 25℃）铁棒
初三物理上册期中测试题含答案汇编 初三物理上册期中测试题 一、选择题：(每题2分，共24分.在每小题给出的四个选项中，有一个正确的.) 1.如图所示的四种情景中，所使用的杠杆属于费力杠杆的是 2.如图所示，轻质杠杆支点为O，在已调平的杠杆两端分别挂上一些钩码，每一个钩码的质量相等，杠杆恰好在水平位置平衡，如果两边各拿走一个钩码，杠杆将 A.仍保持平衡并静止 B.不平衡，向顺时针方向转动 C.不平衡，向逆时针方向转动 D.仍保持平衡，但要转动 3.教学楼每层楼高为3m，小明提着一重为50N的箱子，沿楼梯从一楼登上三楼，再沿三楼水平走廊走了4m进入教室，则小明从一楼到教室过程中对箱子做的功为 A.0 J B.300 J C.450 J D.500J 4.工人们为了搬运一台笨重的机器，设计了如图所示的四种方案(机器下方的小圆表示并排放置的圆形钢管)，其中最省力的方案是 A B C D 5.值日时需要向地面洒水，值日生小阳将一桶水从一楼提到二楼.此过程中，关于做功的说法正确的是 A.对桶做的功是有用功 B.对水做的功是有用功
C.对水做的功是额外功 D.克服自身重力做的功是总功 6.如图所示，在粗糙程度不同的表面上，用大小相等的拉力F，沿不同的方向拉物体运动相同的路程s，则下列关于拉力做功的判断中正确的是 A.甲图中的拉力做功最少 B.乙图中的拉力做功最少 C.丙图中的拉力做功最多 D.甲、乙、丙三种情况下拉力做功一样多 7.用图甲、乙两种方式匀速提升重为100N的物体，已知滑轮重 20N、绳重和摩擦力不计.则 A.手的拉力：F甲=F乙;机械效率：甲=乙 B.手的拉力：F甲 C.手的拉力：F甲F乙;机械效率：甲乙 D.手的拉力：F甲F乙;机械效率：甲乙 8.如图所示，用拉力F使物体竖直匀速上升，下列说法正确的是 A.拉力F对物体做的功是额外功 B.拉力F做的功是有用功 C.拉力F移动的距离是物体移动距离的2倍 D.增加物体重力可以增加滑轮组的机械效率 9.如图所示是使用汽车打捞水下重物示意图，在重物从水底拉到井口的过程中，汽车以恒定的速度向右运动，忽略水的阻力和滑轮的摩擦，四位同学画出了汽车功率(p)随时间(t)变化的图象，其中，正确的是
初三物理内能专项测试题（含答案） 一、选择题 1．对如图所示实验的有关叙述不正确的是（） A. 甲实验中水可以隔绝空气，并给试管中的可燃物加热 B. 乙实验试管内的水沸腾后塞子冲出管口，对应内燃机的做功冲程 C. 丙实验同名磁极相互排斥，磁体间的相互作用是通过磁场发生的 D. 丁是探究分子运动现象的实验，仅将浓氨水换成浓盐酸也可达到实验目的 【答案】D 【解析】【解答】解：A、甲实验中水可以隔绝空气，并给试管中的可燃物加热，故A正确； B、在此过程中，水蒸气的内能转化为软木塞的机械能，与热机的做功冲程能量转化相同，故B正确； C、丙实验同名磁极相互排斥，磁体间的相互作用是通过磁场发生的，故C正确； D、由于浓盐酸具有很强的挥发性，所以探究分子运动现象的实验，仅将浓氨水换成浓盐酸无法达到实验目的，故D错误； 故选D． 【分析】（1）实验中水可以隔绝空气，并给试管中的可燃物加热，这样更安全；（2）对物体做功时，机械能转化为物体的内能，物体的内能增大；物体对外做功时，物体的内能转化为机械能，物体的内能减小．并据此可判断能量的转化形式；（3）同名磁极相互排斥，异名磁极相互吸引，且磁体间的相互作用是通过磁场发生的；（4）浓盐酸具有很强的挥发性； 2．小明和班里的同学讨论热学知识，你认为正确的是（） A. 看到阳光下屋内飞舞的灰尘，这是分子在不停地作无规则的运动 B. 用手捏海绵，海绵的体积变小了，说明分子间有间隙 C. 陨石在坠入大气层时，内能增加，机械能减小 D. 在内燃机的一个工作循环中，燃气对外做功四次 【答案】C 【解析】【解答】A、尘埃在空气中飞舞是宏观物体在外力作用下的机械运动，A不符合题意； B、用手捏海绵，海绵的体积变小了，不能说明分子间有间隙，B不符合题意； C、陨石坠落的过程中，质量不变，高度减小，所以重力势能减小，坠落过程中陨石要克服
高三年级语文周测 一、现代文的阅读 （一）论述类文本阅读，（本题共3题，9分） 阅读下面文字，完成1—3题 文艺是一种表现而不是一种卖弄。表现的理想是文情并茂，“充实而有光辉”，虽经苦心雕琢，却是天衣无缝，自然熨贴，不现勉强作为痕迹。一件完美的艺术品像一个大家闺秀，引人注目而却不招邀人注目，举止大方之中仍有她的贞静幽闲，有她的高贵的身份。 艺术和人一样，有它的品格，我们常说某种艺术品高，某种艺术品低，品的高低固然可以在多方面见出，最重要的仍在作者的态度。品高的是诚于中，形于外，表里如一的高华完美。品低的是内不充实而外求光辉，存心卖弄，像小家娼妇涂脂抹粉，招摇过市，眉挑目送的样子。 文艺的卖弄有种种方式。最普遍的是卖弄词藻，只顾堆砌漂亮的字眼，显得花枝招展，绚烂夺目，不管它对于思想情感是否有绝对的必要。从前骈俪文犯这毛病的最多，现在新进作家也有时不免。 其次是卖弄学识。文艺作者不能没有学识，但是他的学识须如盐溶解在水里，尝得出味，指不出形状。有时饱学的作者无心中在作品中流露学识，我们尚不免有“学问汩没性灵”之感，至于有意要卖弄学识，如暴发户对人夸数家珍，在寻常人如此已足见趣味低劣，在文艺作品中如此更不免令人作呕了。 过去中国文人犯这病的最多，在诗中用僻典，谈哲理，写古字，都是最显著的例。新文学作家常爱把自己知道比较清楚的材料不分皂白地和盘托出，不管它是否对于表现情调、描写人物或是点明故事为绝对必需，写农村就把农村所有的东西都摆进去，写官场也就把官场所有的奇形怪状都摆进去，有如杂货店，七零八落的货物乱堆在一起，没有一点整一性，连比较著名的作品如赛珍珠的《大地》，吴趼人的《二十年来目睹之怪现状》之类均不免此病，这也还是卖弄学识。 第三是卖弄才气。文艺作者固不能没有才气，但是逞才使气，存心炫耀，仍是趣味低劣。像英国哲学家休谟和法国诗人魏尔兰所一再指示的，文学不应只有“雄辩”（eloquence），而且带不得雄辩的色彩。 “雄辩”是以口舌争胜，说话的人要显出他聪明，要博得群众的羡慕，要讲究话的“效果”，要拿出一副可以镇压人说服人的本领给人看，免不掉许多装模作样，愈显得出才气愈易成功。但是这种浮浅的炫耀对于文学作品却是大污点。一般文学作者越有才气，也就越难避免炫耀雄辩的毛病。
(完整word版)初三物理试题和答案 亲爱的读者： 本文内容由我和我的同事精心收集整理后编辑发布到文库，发布之前我们对文中内容进行详细的校对，但难免会有错误的地方，如果有错误的地方请您评论区留言，我们予以纠正，如果本文档对您有帮助，请您下载收藏以便随时调用。下面是本文详细内容。 最后最您生活愉快 ~O(∩_∩)O ~
初三物理试题和答案 一选择题（共18题，每个小题只有一个符合题意的答案。每小题2分，计36分） 1．下列四种现象中属于扩散现象的是（） A．我国北方地区频发的“沙尘暴天气”B．春天柳絮漫天飞舞 C．气体压缩到一定程度后，难以再压缩D．端午节，粽叶飘香 2．水和酒精混合后的体积小于原来体积之和，这是由于（） A．水和酒精分子之间有空隙B．酒精挥发了一部分 C．酒精分子热运动D．水和酒精分子互相吸引 3．下列事例中，通过热传递改变物体内能的是（） A．钻木取火B．双手互搓发热C．晒太阳取暖D．铁丝反复弯折后发热 4．两铁块相互接触时无热传递，说明它们具有相同的（） A．内能B．热量C．温度D．分子势能 5．下列说法正确的是（） A．物体放出热量，温度一定降低B．物体内能增加，温度一定升高 C．热传递中，热量从低温物体传给高温物体D．热传递中，热量从高温物体传给低温物体 6．汽车发动机用水作冷却剂是因为水有较大的（） A．质量B．密度C．比热容D．内能 7．汽油机是由四个冲程不断循环而工作的，图中表示机械能转化为内能的冲程是（） 8．关于能量的说法中，以下说法中错误的是（） A．电灯把电能转化光能B．电饭煲把电能转化为内能 C．风力发电机把风能转化为电能D．燃气热水器把电能转化为内能 9．如果要提高热机的效率，正确的是（） A．用热值大的燃料B．减少各种热损失C．燃烧更多的燃料D．提高热机的功
九年级物理期末测试题 一．选择题（共10小题） 1．关于温度、热量和内能，下列说法中正确的是（） A．0℃的水没有内能B．同一物体的 温度越高，内能越大C．物体的温度越 低，热量越少D．对物体做功，物体的 内能一定增加 2．一电路中有两灯泡都在工作，用电压表测出灯泡两端的电压相等，则说法正确的是（）A．一定是并联B．一定是串联 C．两灯泡规格一定相同D．无法确定 3．小明利用电能表测量某个家用电器的电功率，当电路中只有这个电器连续工作时，测得在1h内， 消耗的电能为 1.2kW?h，那么用这个电器是（A．液晶电视机B．台式计算机C．家用空调4．关于家庭电路和安全用电的说法中正确的是（ ）D．电冰箱 ） A．电路中出现“跳闸”现象，一定是过载引起的B．正常使 用试电笔检测线路时，氖管一定发光C．正常使用试电笔检 测线路时，一定没有电流通过人体D．控制电灯的开关一定 要接在火线和灯泡之间 5．如图所示的四个装置分别演示一物理现象，则下列表述正确的是（） A．图甲可用来演示电磁感应现象B．图乙可用来演示电 流的磁效应C．图丙可用来演示磁场对通电导体的作用 D．图丁可用来演示电磁铁的磁性强弱与电流大小的关系 6．如图所示，AB和BC是由铝制成的长度相同、横截面积不同的两段导体，将它们串联后连入电路 第1页（共9页）
中，下列说法正确的是（） A．AB段的电阻小于BC段的电阻 B．通电相同时间，AB段消耗的电能大于BC段消耗的电能 C．这两段金属导体中的电流是由正电荷定向移动形成的 D．若将AB段材料换成铜，其他条件不变，这两段导体的总电阻将变大 7．如图所示电路中，电源电压保持不变．当开关S闭合，滑动变阻器的滑片P向左移动时，下列说 法正确的是（） A．电压表V 与电压表V2的示数之和保持不变 1 B．电压表V1与电流表A的示数之比变大C．电 流表A的示数变大，电压表V2的示数不变 D．电流表A的示数变小，电压表V1的示数变小 8．如图所示电路闭合开关，甲、乙两灯泡均发光，过一会儿，其中一个灯泡突然熄灭，但两电表指 数仍明显偏转，造成此现象的原因可能是（） A．甲灯泡短路B．乙灯泡短路C．甲灯泡断路D．乙灯泡断路 9．有两个电路元件A和B，流过元件的电流与其两端电压的关系如图（甲）所示．把它们串联在电路中，如图（乙）所示．闭合开关S，这时电流表的示数为0.4A，则电源电压和元件B的电功率分别是（）
高一第二周测试 2016.10.15 第I卷选择题 (共50分) 第一部分阅读理解（共两节，满分30分） （共7题；每小题3分，满分21分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 A The following are four famous malls in the world where you can not only purchase things but also enjoy entertainment. Mall of America (Minnesota, USA) This Mall has a theme park and a wedding church, where more than 5,000 couples have been married since its opening. The mall of America opened in 1992 and is the third largest mall in North America. The mall of America is the most visited shopping mall in the world, with more than 40 million visitors annually. Spending 10 minutes in every store would take shopper more than 86 hours to complete their visit to the Mall of America. Mall of the Emirates (Dubai)
初三物理试题期末考试 答题前，请仔细阅读以下说明： 本试卷分第Ⅰ卷和第Ⅱ卷两部分，共四大题（30小题），满分100分，考试时间为90分钟. 请将选择题的答案标号填写在第一题后面的表格里.答题可用蓝、黑色钢笔或圆珠笔按各题要求答在试卷上，做图题可以用铅笔. 答卷前将密封线内的项目填写清楚，考试结束，第Ⅱ卷交回. 第Ⅰ卷（选择题29分） 一、选择题（1—10小题为单选题，11－13小题为多选题，单选每小题2分，多选全部选对的得3分，选对但不全的得1分，选错或不选的得0分，共29分） 1.下列情况，运动状态发生改变的是 A.静止在草坪上的足球 B.匀速上坡的汽车 C.水平路面上匀速行驶的汽车 D.扔出去的手榴弹 2.如图1所示的鞋底、轮胎上都有凹凸不平的花纹，这主要是为了 A.增大受力面积，减少压强 B.减少受力面积，增大压强 C.使接触面粗糙，增大摩擦 D.增强产品的美观 图1 3.下列说法中正确的是 A.在空中飞行的足球受重力和运动员踢它的力作用 B.游泳时，人划水身体就能往前游，是因为力的作用是相互的 C.静止在水平公路上的汽车受到的重力和汽车对路面的压力是一对平衡力 D.人推桌子，桌子没有动，是因为推力小于摩擦力 4.两个完全相同的容器中，分别盛有甲、乙两种液体，将完全相同的两个小球分别放入容器中，当两球静止时，液面相平，球所处的位置如图2所示．甲、乙两种液体对容器底的压强分别为Ｐ甲、Ｐ乙，两个小球受到的浮力分别为F甲、F乙，则下列关系正确的是A.Ｐ甲=Ｐ乙，F甲=F乙 图2
B.Ｐ甲<Ｐ乙，F 甲
每周一测 I. 阅读理解 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。 A Personal computers and Internet give people new choices about how to spend their time. Some may use this freedom to share less time with certain friends or family members, but the new technology will also let them stay in closer touch with those they care most about. I know this from personal experience. E-mail makes it easy to work at home, which is where I now spend most weekends and evenings. My working hours aren’t necessarily much shorter than they once were but I spend fewer of them at the office. This lets me share more time with my young daughter than I might have if she’d been born before e-mail became such a practical tool. The Internet also makes it easy to share thoughts with a group of friends. Say you do something fun—see a great movie perhaps and there are four or five friends who might want to hear about it. If you call each one, you may be tired of telling the story. With e-mail, you just write one note about your experience, at your convenience, and address it to all the friends you think might be interested. They can read your message when they have time, and read only as they want to. They can reply at their convenience, and you can read what they have to say at your convenience. E-mail is also an inexpensive way to stay in close touch with people who live far away. More than a few parents use e-mail to keep in touch, even daily touch, with their children at college. We just have to keep in mind that computers and the Internet offer another way of staying in touch. They don’t take the place of any of the ways. 1. The purpose of this passage is to ____________. A. explain how to use the Internet B. describe the writer’s joy of keeping up with the latest technology C. tell the value and usefulness of the Internet D. introduce the reader to basic knowledge about personal computers and the Internet 2. The use of e-mail has made it possible for the writer to ____________.
20**年中考物理模拟试题1 第1卷（选择题） 注意事项： 本试卷分试题卷和答题卡两部分，请将答案答在答题卡上每题对应的答题区域内，答在试题卷上无效．考试结束，请将本试题卷和答题卡一并上交． 一、选择题（共10小题，每小题只有一个符合题意的选项，请将这个选项前面的字母代号用2B铅笔 在答题卡上填涂．每小题2分，计20分） 题号12345678910 答案 1．一种新型保险柜安装有声纹锁，只有主人说出事先设定的暗语才能打开，别人即使说出暗语也打不开锁．这种声纹锁辨别主人声音的依据是（） A．音调 B．音色 C．响度 D．声速 2.图中的几种用电器的额定功率最接近1000W的是（） 3．嫦娥一号承载着中华民族千年的奔月梦想从西昌成功发射，精确入轨；11月5日，嫦娥一号成功“牵手”月球，成为中国第一颗月球卫星。下列说法中不正确的是（） A．火箭发射时燃气燃烧产生的内能转化为火箭的机械能 B．火箭发射上升时动能转化它的重力势能 C．围绕月球作匀速圆周运动机械能守恒 D．卫星内部工作系统所需的能量由卫星两翼的太阳能电池板提供 4．发电机和电动机的相继问世，使电能的大规模生产和利用成为现实，人类社会进入了电气化的时代．如图所示的四幅图，其中属于电磁感应现象实验图及其应用图的是（） A．①③ B．①④ C．②③D．② ④ 5、如图所示的压路机，关于它涉及到的物理知识，下列说法中错误的是（） A．碾子由钢铁制成，利用了钢铁硬度大的特性
图 1 用滴管吸取药液 B 用吸盘挂钩挂物品 C 用锋利的菜刀切菜 D 水杯倒置水没流出 B ．碾子质量很大，是为了增大对路面的压强 C ．碾子很粗很宽，是为了减小对路面的压强 D ．橡胶轮胎外表制有花纹，是为了增大与路面的摩擦 6.如图所示的各种事例中，跟大气压无关的是 （ ） A B C D 7．汶川地震中，滚滚的山石挡住了道路。增援人员要用撬棒撬开 山石，分别沿如图所示的四个方向用力，其中最省力的是（ ） A ．沿F 方向 B ．沿F 方向 C ．沿F 方向 D ．沿F 方向 8.夏天的早晨，树叶上常常会有一些露珠．透过这些露珠看到的叶脉会更清楚，这是由于露珠相当于一个“凸透镜”，使叶脉放大了．这种情形下，叶脉应该位于“凸透镜”的（ ） Ａ．焦距以内 Ｂ．焦距和二倍焦距之间 Ｃ．二倍焦距处 Ｄ．二倍焦距以外 9．下列关于四季美景的描述中，属于凝华现象的是（ ） Ａ．春天，雨笼山峦 Ｂ．夏天，雾绕群峰 Ｃ．秋天，霜打枝头 Ｄ．冬天，冰封谷底 10. 关于能源．信息和材料，下列说法正确的是（ ） Ａ．核能是可再生能源 Ｂ．光电池和V ＣＤ光碟都应用了磁性材料 Ｃ．光导纤维是利用超声波来传递信息的 Ｄ．移动通信是利用微波传递信号的 第Ⅱ卷（非选择题） 题号 一题 二题 三题 四题 总分 得分 二、填空题（共4小题，每空1分，计8分） 1、仔细分析右表中的数据，你会发现声音传播的速度与介质种类和 等因素有关。成语“悦 耳动听”是形容声音的 。 2、今年4月12日下午，铁道部召开中国铁路第六次大提速新闻发布会宣布，即将于4月18日投入运营的“子弹头”动车组。 几种物质中的声速v （m/s ） 空气（15℃） 空气（25℃） 软木 煤油（25℃） 铁棒 340 346 500 1324 5200
人教版九年级物理上综合练习题 一、选择题 1、在国际单位制中，功的单位是 ： A ．N B ．kg C ．Pa D ．J 2、夜晚，看到月亮在云中穿行，这时选择的参照物是： A ．云 B ．月亮 C ．地面 D ．观看的人 3、如图1所示的四种简单机械中，属于费力杠杆的是： 4、如图2所示，物体m 从斜面的顶端下滑到底端，已知斜面是 光滑的，则在下滑过程中物体m 的能量变化情况是： A ．动能减小，势能减小，机械能减小 B ．动能增大，势能减小，机械能不变 C ．动能不变，势能减小，机械能减小 D ．动能不变，势能不变，机械能不变 5、下列说法中正确的是： Ａ．机械效率越高，机械做功一定越快 Ｂ．做功越多的机械，机械效率一定越高 Ｃ．功率越大的机械做功一定越多 Ｄ．做功越快的机械，功率一定越大 6、浸没于水中的钢球，在继续下沉的过程中，它受到的： A 、浮力变小，压强变大 B 、浮力变小，压强变小 C 、浮力不变，压强变大 D 、浮力不变，压强变小 7、一只底面积为S 的箱子，放在面积为2S 的水平桌面的中央时，箱子对桌面的压强为P ；当放在面积为 2 S 的水平凳面时，箱子对凳面的压强是： A ．0.5P B ．P C ．2P D ．4P 8、你注意观察过家里的自行车吗？下列关于自行车增大摩擦或减小摩擦的说法，哪个是错误的？ A ．轮胎上做有凸凹不平的花纹，是为了增大摩擦 A ．天平 B ．火钳 C ．钉撬 D ．老虎钳 图 1
B．刹车时用力捏刹车柄是为了增大摩擦 C．往车轮轴承上加润滑油是为了减小摩擦 D．车轮上装有滚动轴承，是为了增大摩擦 9、如图3所示，用纸片把盛满水的杯子的杯口盖上，再使杯口向下， 纸片不会掉下，水也不会流出，主要是因为： A、纸片很轻 B、水粘住纸片 C、空气有浮力 D、大气对纸片有向上的压力图3 10、一本物理书放在水平课桌上处于静止状态，下列各对力中，属于平衡力的是： A、书受到的重力和桌面对书的支持力 B、书受到的重力和书对桌面的压力 C、课桌受到的重力和桌面对书的支持力 D、书对桌面的压力和桌面对书的支持力 11、如图4所示，每个钩码质量相等，轻杠杆处于平衡状态， 若在两边钩码下各再挂上一个相同的钩码，这时 A、杠杆仍在水平位置平衡 B、杠杆右端下降 C、杠杆左端下降 D、杠杆右端上升 图4 12、如图5所示，三个规格相同的烧杯甲、乙、丙，分别盛上质量相等的酒精、水和硫酸。 那么，杯底受到液体的压强 A、甲最大 B、乙最大 C、丙最大 D、甲、乙、丙一样大 甲乙丙 图5 二、填空题 13、运动员踢球时，对球施力的物体是：，这时也受到球的作用力；人用手拍桌面，手会感到痛，这是因为。
一、选择题（本题10小题．每小题3分，共30分；请将每题只有一个符合题意的选项填写在相应题后的括号内） 1．关于生活中的一些电路连接，下列判断不正确的是（） A．节日的夜晚，装扮秦淮河畔小树的小彩灯是串联的 B．道路两旁的路灯，晚上同时亮，早上同时灭，它们是串联的 C．一般家庭的卫生间都要安装照明灯和换气扇，使用时互不影响，它们是并联的 D．楼道中的电灯是由声控开关和光控开关共同控制的，只有在天暗并且有声音时才能亮，所以声控开关、光控开关及灯是串联的2．图3-1为路口交通指示灯的示意图。指示灯可以通过不同颜色灯光的变化指挥车辆和行人的交通行为。据你对交通指示灯的了解可以推断（） A．红灯、黄灯、绿灯是串联的B．红灯、黄灯、绿灯是并联的 C．红灯与黄灯并联后再与绿灯串联D．绿灯与黄灯并联后再与红灯串联 3．如图3-2甲所示，电冰箱内有一个通过冰箱门来控制的开关，当冰箱门打开时，开关闭合使冰箱内的照明灯点亮；当冰箱门关闭时，开关断开使冰箱内的照明灯熄灭. 在图乙的四个电路中，能正确表示冰箱开门状态下冰箱内照明电路的是（） 。 图3-2甲图3-2乙 图3-1 图3-3 图3-4 图3-5 4．如图13-3所示，在探究并联电路中的电流关系时，小明同学用电流表测出A、B、C三处的电流分别为I A=、I B=、I C=，在表格中记录数据后，下一步应该做的是（） A．整理器材，结束实验 B．分析数据，得出结论 C．换用不同规格的小灯泡，再测出几组电流值 D．换用电流表的另一量程，再测出一组电流值 5．小华和几位同学在学校实验室探究并联电路中的电流关系时，连接了如图13-4所示的电路。当开关S由断开到闭合时，关于两个电流表的示数变化情况，你认为正确的是（） A、A1的示数变大，A2的示数不变 B、A1的示数变小，A2的示数变大 C、A1的示数变大，A2的示数变小 D、A1的示数不变，A2的示数变大 6．如图3-5所示，开关S闭合时，可能发生的现象是（） A. L1被烧坏 B. L1、L2均不发光 C. 电池被烧坏 D. L2被烧坏 7．如图3-6所示，粗心的小强把电流表当作电压表接在了L1的两端。此时如果闭合开关，一定 ．．会发生（） A、电源短路 B、电流表损坏 C、L1不亮 D、L2的灯丝烧断
每周一测 Ⅰ. 阅读理解 A Mark felt that it was time for him, to take part in his community, so he went to the neighborhood meeting after work. The area’s city councilwoman (女议员) was leading a discussion about how the quality of life was decreasing. The neighborhood faced many problems. Mark looked at the charts taped to the walls. There are charts for parking problems, crime, and for problems in vacant buildings. People were supposed to suggest solutions to the councilwoman. It was too much for Mark. “The problems are too big,” he thought. He turned to the man next to him and said, “I think this is a waste of my time. Nothing I could do would make a difference here.” Mark thought some more on his way to the bus stop. “People should just take care of themselves,” he decided. “That’s enough to do. I can’t take on all the problems of the world.” As he neared the bus stop, Mark saw a woman carrying a grocery bag and a baby. She was trying to unlock her car, but she didn’t have a free hand. As Mark got closer, her other child, a little boy, suddenly darted into the street. The woman tried to reach for him, but as she moved, her bag shifted and the groceries started to fall out. Mark ran to take the boy’s arm and led him back to his mother. Then he picked up the grocerie s while the woman smiled in relief. ‘‘Thanks!” she said. “You’ve got great timing!” “Just being neighborly,” Mark said. As he rode home, he glanced at the walls of the bus. On one of them was “Small acts of kindness add up.” Mark smiled and thought, “Maybe that’s a good place to start.” 1. It is known from the passage that . A. Mark played an active part in community activities B. the city councilwoman was responsible for the falling of life quality
长郡教育集团2013-2014-1初三年级统一考试 物 理 试 卷 一、选择题（共14个小题，每小题3分，共42分。每个小题只有一个答案是正确的。） 1、汽车在下雨或寒冷天气行车时，挡风玻璃上会积水或积雪，影响驾驶员视野清晰和行车安全。新一代后风窗玻璃利用玻璃内夹有的电热丝加热来除雾、除霜，立即消除驾驶员的后顾之忧，这主要利用了金属的（） A 、延展性 B 、导电性 C 、弹性 D 、磁性 2、下列说法中正确的是（） A ．温度越高的物体，放出的热量越多 B ．汽油机的压缩冲程是将内能转化为机械能 C ．铁块很难被压缩，是因为分子间存在着斥力 D ．发射火箭时常用液态氢作为燃料，是因为液态氢的比热容大 3、下列说法中正确的是（） A ．电子定向移动的方向规定为电流的方向 B ．电源的作用是不断产生新的电荷 C ．陶瓷和石墨都是绝缘体 D ．用丝绸摩擦过的玻璃棒靠近带正电的物体时会相互排斥 4、如图所示是小浩学完变阻器知识后自制的调光台灯，R 是镍铬合金线，当导线夹向A 端移动时，小灯泡的亮度将( ) A ．不变 B ．变亮 C ．变暗 D ．无法判定 5、小辉同学在家中拍到一张电能表照片（如右图），他仔细观察照片后，得到下列结论，其中不正确．．． 的是( ) A ．电能表是用来测量家中用电器消耗电能的仪表 B ．电能表的标定电流为5 A C ．拍照片时，小辉家已消耗的电能为9 316 kW·h D ．电能表的转盘转2500圈说明家中用电器消耗了1度电 6、小华家的电风扇具有摇头功能。风扇不转时，不能单独使用摇头功能；风扇转动时，可根据需要选择使用摇头功能。下列电路符合要求的是（） ～ 220V ～ 220V ～ 220V ～ 220V 风扇 S 1 风扇 S 1 摇头 S 2 摇头 S 2 M 1 风扇 M 1 风扇 M 2 摇头 M 2 摇头 M 1 风扇 风扇 S 1 M 2 摇头 摇头 S 2 风扇 S 1 M 1 风扇 摇头 S 2 M 2 摇头
初三物理中考模拟试卷及 答案 Revised by Liu Jing on January 12, 2021
苏州市立达中学，景范中学2013年初三物理中考模拟试卷及答案 2013. 04 一、选择题（本题共12小题，每小题2分，共24分，每小题给出的四个选项中只有一个选项正确） 1．下列关于科学家与他们的重大发现的说法中错误的是 A．牛顿发现万有引力B．欧姆发现欧姆定律 C．法拉第发现电磁感应D．阿基米德发现电流的磁场2．下列常见的物体通常情况下都属于绝缘体的一组是 A．汽油和盐水B．黄铜和石墨C．人体和大地D．塑料和陶瓷 3．以下能源中都属于可再生能源的是 A．石油、水能B．天然气、风能C．水能、太阳能D．煤、生物质能 4．如图所示的四种情景中，属于光的直线传播的是 5．祖国的山河一年四季美景如画，图中的描述属于液化的是 A．春天，冰雪消融B．夏天，草叶上形成露珠 C．秋天，枝头挂满白霜D．严冬，冰雕逐渐变小 6．关于下列估计，比较合理的是 A．一元硬币的直径约是2cm B．一本物理书的宽度约是1m C．一部手机的质量约是1kg D．一台ipad的质量约是10g 7．关于安全用电，下列说法正确的是
A．使用三孔插座是为了节能B．三脚插头内有一根导线与用电器的外壳相连 C．熔丝烧断一定是发生了短路D．安全电压为220V 8．在一堂物理活动课上，同学们正以“假如没有了……”为主题展开讨论，以下是几位同学提出的五个具有代表性的观点 ①假如没有了地球引力，物体的质量仍然存在 ②假如没有了导体的电阻，导线将无法导电 ③假如没有了磁体周围的磁场，世界上就再也不会有电流的产生 ④假如没有了摩擦力，一阵微风也可以吹动停在平直轨道上的火车 ⑤假如没有了电磁波，我们将无法进行信息交流。其中合理的是 A．①④B．③④⑤C．①②③④D．①②③④⑤ 9．下列实验现象可以证明分子间存在引力的是 A．两个表面光滑的铅块紧压后粘在了一起B．与毛皮摩擦过的橡胶棒吸引碎纸屑 C．用吸管从瓶里吸出饮料D．通电螺线管吸引大头针 10．在如图所示电路中，闭合开关S后，在滑片P向右滑动过程中，各电表示数变化正确的是 A．A 1、A 3 示数不变，A 2 、V示数变小 B．A 1、V示数不变，A 2 、A 3 示数变小 C．A 1、A 2 、V示数不变，A 3 示数变小
正月十六烟台高三英语试题 第二部分阅读理解(共两节，满分35分) A Singapore Garden Festival(SGF)is the only show in the world to gather the world's top award-winning garden and flowery designers under one roof．This“must-see”event will impress you with a wide range of displays and activities that have been planned specially for you．An experience of a lifetime awaits at the Singapore Garden Festival for you and your family．Mark your calendar today! Jacob Ballas Children's Garden Worry that your child is bored? Sign him or her up for a guided tour in Jacob Ballas Children's Garden．It will stimulate a sense of wonder in your child as it promises a unique discovery and provides interesting learning experiences in a garden setting．Let your child explore and play so that they will learn to take care of plants and the environment while you admire the exhibits with a peace of mind． Far East Organization Children's Garden Your child can have a fun-filled day with interactive games，water play features and educational programs in an abundant natural setting at Far East Organization Children's Garden! The play zone contains play such as a sway(摇摆)bridge and stepping springs，and the Fish Fountain with an interactive landscape of water tunnels and different fish-Shaped sculpture． Marine Cove Children's Outdoor Playground Come and bring your child to the 3500-square-metre playground suitable for children of various ages! It is located next to the beach，offering users open spaces and a good view of the sea．Your child can also join in the fun at a play area with talking tubes，fun mirrors and a drum set! The playground also has play equipment for children who have disabilities to play together．This includes special needs equipment such as sensory play panels． 21．Why is Singapore Garden Festival a“must-see”event? A．It is the only show to gather different roofs. B．It is a grand awarding ceremony for designers． C．It attracts flowery designers to the competition． D．It brings together the world-class garden and flowery designs． 22．What can the children do in Jacob Ballas Children's Garden? A．Have a good view of the sea．B．Participate in interactive games． C．Learn to look after the plants．D．Know about ways to design gardens． 23．Which of the following venues suits disabled children most? A．Marine Cove Children's Outdoor Playground．B．Far East Organization Children’s Garden．C．Jacob Ballas Children’s Garden．D．The Fish Fountain． B Jazz guitarist Joel Harrison came of age in 1960s and 70s’Washingt on，but he never saw it as a place to build a career as an adventurous，progressive musician．Everywhere he's gone，however，he’s taken the sounds of the city with him． “Growing up in that area allowed me access to a lot of different kinds of music，”says Har rison，61，who’s now based in New York after living in Boston and San Francisco．“Southern music traditions—old-time music，bluegrass，country—as well as jazz and R&B．” All of those appear to some degree in Free Country，a project Harrison began in 2003 as a means of filtering (渗透)country and bluegrass compositions through a up-to-date jazz sound and sensibility．On his new album，“Angel Band：Free Country V ol.3，”Harrison，on guitar and vocals(演唱)，and his band take on many traditional bluegrass songs．Each cut is really kind of its own，distinct sound world．Since Harrison released the first two Free Country albums，he has produced 14 other albums．The Free Country releases，though，have been his most successful，and established his reputation． In particular，Harrison drew inspiration from Danny Gatton，a D．C．guitar hero who similarly combines the local musical currents．Harrison was a self-described adorer of Gatton，going to attend his countless performances． Harrison is also a composer．His work，rooted in progressive Jazz but exploring multiple types，is often through-composed and highly complex．He received a Guggenheim scholarship in2010 to compose and record an，eight-movement piece．The tunes he plays with Free Country are simpler，based on conventions of folk and pop music—which，for Harrison，is a large part of their appeal． The music that he’s covering timeless，and he aims to find endless currency in its timeless simplicity by maintaining me soul of the compositions and also adding a modern context and a modem language to it．24．What exposed Harrison to various music? A．His growth environment．B．His current place of residence． C．His family background．D．Touring the country． 25．What do we know about Joel Harrison? A．He has released 14 albums in total so far． B．He showed a new jazz style in Free Country． C．He earned large profits by releasing Free Country． D．He was inspired to hold many performances by Gatton． 26．What’s Harrison’s goal of creating music? A．To put modern elements into the languages． B．To develop different styles based on previous jazz． C．To compose more pieces and release more albums． D．To seek great popularity in its permanent simplicity． C Gene therapy(基因治疗)is a revolutionary new technique for treating people with health problems．Up until very recently，the most commonly available methods for treating patients were either through drugs or operations．Gene therapy provides a third option for treatment by transforming or replacing cells with new genetic materials and instructions．Scientists can be very precise in the kinds of changes they make in patients． Gene therapy works by using a delivery system，such as a virus，to enter a patient’s body．Once inside the body，the virus combines with a host cell and delivers the new DNA．The proteins then begin to repair the affected cells．New techniques have focused on removing cells from the patients and transforming them outside the body before reintroducing them to the patients． The two types of gene therapy are called somatic and germline．Somatic therapy refers to changing or replacing a body cell．In this case，the treatment is restricted to the patient only．This will not affect the patient’s future children because the patient's germ(生殖)cells are unaffected．In germline therapy，the patient germ cells are treated，which may affect the patient's future generation．This is highly controversial(有争议的)because it is not clear exactly how this might affect them and further generations．For this reason，many countries have passed laws that prohibit this kind of treatment． Despite the promise of gene therapy，there are still many barriers that need to be overcome before it comes into widespread use．One of the issues is that the use of viruses to deliver DNA may actually cause unexpected problems in patients if the virus grows and attacks the body. Another problem is the nature of many diseases is very complex and spread throughout multiple genes. The use of gene therapy to change a single gene in the body would probably not be sufficient as a cure．Finally，the costs of gene therapy are high. Some gene therapy procedures may cost over$1 million to undertake and require specialized doctors and equipment． 27．What does the underlined word“them”in paragraph 2 refer to? A．Techniques．B．Cells．C．Patients．D．Proteins． 28．What can we learn about gene therapy? A．Gene therapy has been put into practice widely． B．The cells of patients are developed in healthy people． C．Viruses entering the body can mix with host cells and form new DNA． D．Both somatic and germline therapy have side effects on later generations． 29．What's the last paragraph mainly about? A．The disadvantages of gene therapy．B．The promising future of gene therapy． C．The high costs of treatment procedures．D．The issues related to viruses and complex genes．30．What can be a suitable title for the text? A．Why Gene Therapy Procedures Are Extremely Expensive B．Gene Therapy：A Dangerous New After-operation Treatment C．Gene Therapy：A Contemporary Progressive Treating Method D．Scientists Are Accurate in Performing the Categories of Surgery