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2009学年第二学期第一次月考八年级英语试卷

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2009学年第二学期第一次月考八年级英语试卷

一、听力部分（计20分） Ⅰ．听小对话，选择图片（共5小题，计5分） 1. What’s the man’s favorite sport? A. B. C.

2. How does the woman feel about the soap opera? A. B. C.

3. How much is the scarf? A.

4. What will Jim probably get for his birthday? A. B. C.

5. What time does Jane usually go home? A. B. C.

II．听小对话，回答问题(共5小题,计5分) 6．What does the man do? A．A teacher. B．A doctor. C．A policeman. 7．Which lesson is the boy going to learn today? A．Lesson13. B．Lesson12. C．Lesson11. 8．Who might break the man’s glasses? A．Lily. B．Lucy. C．The cat. 9．What number did the man dial? A．3315429. B．3316429. C．3115429. 10．What do you think of the boy? A．He doesn’t work hard. B．He is a hard—working student C．He does well in his lessons. III．听长对话，回答问题(共5小题,计5分) 听下面一段较长的对话，回答第11至第12两小题

B. C. 11．Where are they? A．At the doctor’s B．In the garden. C．In the teacher’s room. 12．Why does the man come to this place? A．He thinks he is too fat. B．He feels tired C．He has a question about planting flowers.

听下面一段较长的对话，回答第13至第15三小题 13．What did the girl do last night? A．Called the man. B．Mended the computer. C．Read an e-mail. 14．Why didn’t she send an e-mail? A．Because she had to mend a computer. B．Because her computer didn’t work. C．Because she had to do her homework. 15．What can we get from the dialogue? A．We can’t send e-mails by computer. B．The man can’t mend the computer. C．The girl needed some help.

IV．短文理解(共5小题,计5分) 16. All the family members went to Black Pool last weekend except ______. A. me B. my brother C. my father 17. We got up early at _______ on Saturday morning. A. 5:00 B. 5:20 C. 5:50 18. It was ________ when we left home. A. fine B. sunny C. rainy 19. We were waiting on the country road because _________. A. my brother was sick B. some sheep stopped us C. a policeman stopped us 20. It took us _______ to arrive in Black Pool. A. more than an hour B. less than two hours C. more than two hours

二、笔试部分（计80分） Ⅴ. 单项填空（共15小题，计15分） 从A、B、C、D四个选项中，选出可以填入空白处的最佳答案。 21. ----If there are ________ people driving, there will be ________ air pollution. ----Yes, the air will be fresher. A. less; less B. less; fewer C. fewer; fewer D. fewer; less 22. ----What a lovely card! Where did you buy it? ----I made it by ________. A. me B. himself C. myself D. itself 23. ----Can you finish the work ________ two days? ----Yes, I can. A. for B. about C. in D. before 24. Money is important in our life. But it isn’t ________ to us. A. everything B. something C. anything D. nothing 25. If you have any trouble, you can go to the policeman to ______ help. A. find B. ask C. ask for D. find out 26. We ________ basketball on the playground when it ________ to rain. A. played; began B. were playing; began C. played; was beginning D. were playing; was beginning 27. ________ the alien was buying a cap, I called my friend Tom. A. What B. While C. As soon as D. The moment 28. Han Bin ________ Li lei with his English at eight yesterday morning. A. was helping B. is helping C. helps D. helped 29. ----Where did you go yesterday? ----I didn’t go _______. I stayed at home the whole day. A. somewhere B. nowhere C. anywhere D. where 30. There ________ a sports meeting next month. A. is B. is going to have C. will be D. has 31. ----Will this kind of tree live ________ 1000 years old? ----Yes, it ________. A. to; is B. to; will C. to be; will D. to be; will be 32. We used a ________ to send Shenzhou VII into space. A. spaceship B. rocket C. robot D. plane 33. John will _______ go to France on vacation this summer. A. possible B. may be C. probably D. able to 34. ----I think you should go to bed early every day. ----________. A. Thank you for helping me B. Of course C. It doesn’t matter D. That’s a good idea 35. ----I saw an alien just now! ----________ A. I’m sorry. B. That’s right. C. Are you kidding? D. Best wishes! Ⅵ. 完形填空（共15小题，计15分） 阅读下面短文，掌握其大意，然后从A、B、C、D四个选项中，选出可以填入空白处的正确答案。 Everyone needs friends. But do you know 36 to find real friendship（友谊） and keep it? An American writer 37 Sally tells young students some good ways to find 38 . Sally says finding friendship is just like 39 a tree. You plant the seed （种子） and 40 it to make it grow. She says you should first choose someone 41 can be a good friend. It doesn’t matter whether he has money or good looks. A good friend should be kind and 42 . If you have a bad day, a good friend should 43 your complaints（抱怨）and do his 44 to help you. If you want to make a friend, you should make each other 45 . But things cannot always be happy. 46 the best friends may have arguements. What should you do when you 47 with your friend? You may try to have an honest talk with him when there is no one around. If he 48 want to talk, you can write a letter to tell him how you are feeling.

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2019-2020学年八年级下学期英语第一次月考试卷A卷

2019-2020学年八年级下学期英语第一次月考试卷A卷

2019-2020学年八年级下学期英语第一次月考试卷A卷姓名:________ 班级:________ 成绩:________一、完形填空(每小题1分，共15分) (共1题；共15分)1. （15分）完形填空It's very important that we all recycle.In nature,everything1 again.For example,when an animal dies,it becomes2 animal's food.Nothing is wasted.But humans have created things like plastic bags which can't be3 down by nature.Our4 kills animals and pollutes water and soil.5 we continue making too much rubbish,the problem will only get worse.If nature can't reuse the rubbish,we must recycle6 .We should clean up the rubbish we've made because nature can't.Recycling is also the right thing to do for another reason.The earth is rich in natural materials like water and trees,7 these materials are not endless (无尽的).We use up our natural materials8 faster than the earth is able to reproduce (再生) them.For example,each year we cut9 more than 6,000 square miles of forest.But it takes an average of 25 years for a new tree10 .Recycling can help us save the earth,so let's take action right now.（1）A . useB . is usingC . usedD . is used（2）A . anotherB . othersC . the otherD . the others（3）A . lainB . takenC . putD . broken（4）A . rubbishD . food（5）A . WhenB . WhyC . IfD . Unless （6）A . themB . itC . itselfD . themselves （7）A . orB . soC . andD . but（8）A . veryB . moreC . muchD . many（9）A . outB . downC . upD . into （10）C . grewD . to grow二、阅读理解(前两篇每小题1分，后两篇每小题2分，共26分) (共4题；共26分)2. （4分）阅读理解Each of us makes mistakes from time to time. In fact, we can get a lot from our mistakes.Donnie was a shy student and never answered questions in class. He was afraid to make mistakes. He never finished his homework because he didn't want to make any mistakes. Nothing changed till Marry Anne, a teacher, came to our class.One morning, Marry Anne asked Donnie to answer some questions. After a while Donnie was in tears because he made a mistake. Suddenly Marry Anne got a box full of erasers from the desk."Look, Donnie," she said standing beside him. "I have something to show you." She took out the erasers, one at a time, and put them on the desk."See these erasers, Donnie?" she asked. "Do you know why the erasers become smaller and smaller? That's because we make mistakes. But we erase the mistakes and try again. That's what you must learn.""Here," she said, "I'll leave one eraser on your desk, so you will remember that everyone may make mistakes." Donnie looked at Marry Anne and smiled.Donnie changed a lot from then on. He knew that everyone had the permission(许可) to make mistakes as long as you learned them and tried again.（1）Why did Donnie never answer questions in class?A . Because he couldn't answer themB . Because he was afraid to speak before his classmates.C . Because he was afraid to make mistakesD . Because he was afraid of his teachers（2）What did Marry Anne show Donnie?A . mistakesB . erasersC . questionsD . homework（3）What does the underlined word "erase" here mean in Chinese?B . 承认C . 认识到D . 减少（4）What can we infer(推断)from the passage?A . Donnie would like to be a teacher like Marry AnneB . Donnie would buy lots of erasers for Marry AnneC . Donnie wasn't afraid to make mistakes any moreD . Marry Anne wouldn't ask Donnie to answer questions in class3. （4分）（2015•广东）It is reported that some developed counties have shipped broken parts of computes to China.Such a thing can be founded every day although it is against international laws. Last month Hong Kong officers found 131,000 kilograms of broken computers, TVs and phones send from Japan.Things like these are called electronic waste, or e-waste. Dealing with is not an easy job because dangerous poison like mercury(汞)and lead (铅)can be found in them. Every time an old computer breaks down, it needs to be deal with safely. But at present, broken computer parts are usually buried. It may be hundreds of years before they are really goes in the earth.Many places in China are polluted by e-waste. Guiyu in Guangdong province is one of them. This town is named as "the e-waste capital of the world”. It has to deal with 1.5mllion kilograms of e-waste each year, from which it makes 75 million years. But it comes at a cost. Many of the poison in e-waste find their way into the environment. Plastic is burned outdoors and chemical water is poured into rivers, Greenpeace, an environmental group, has found the air, the earth and the rivers in Guiyu badly polluted.The Chinese government wants the country to develop, but in a way that doesn;t do harm to the environ ment and people’s life. This year,China presents a new protection law, the strictest one we have ever had. Computer complies like Lenovo and Dell will be asked to take back their old computers. This is because the complies that make computers know best to deal with them safely. Hopefully, the problem with e-waste will be solved in near future.（1）The e-waste found in Hong Kong last month was from________.A . FranceB . JapanC . GermanyD . Australia（2）The underlined word buried probably means ______in the passage.A . 焚烧B . 障碍C . 回收D . 掩埋（3）The townof Guiya in Guangdong Province_________.A . is the e-capital of the worldB . has serious e-waste pollutionC . Dealswith e-wastesafelyD . speeds much money on e-waste（4）This year,the Chinese government__________.A . tried to change people’s lifeB . closed some computer compliesC . make a new environment protection lawD . asked people to hand in their old computers（5）The passage is mainly about________.A . the way in deal with e-wasteB . the cost of burning e-wasteC . the e-waste problem in ChinaD . the need to pass a law against e-waste4. （8分）阅读理解BAs a rule, we have a test about some usual things in our life every two months. During my second month of nursing school, our teacher gave us a pop test as usual.I was a serious, hard-working and careful student, so I passed the questions easily until I read the last one, "What is the first name of the woman who cleans the school?"I thought this was sure some kind of joke. I saw the cleaning woman several times. She was tall, dark hair and in her 50s, but how would I know her name? I handed in my paper, leaving the last question blank.Before the class ended, one student named Nancy asked our teacher if the last question would count toward our test grade. This was also all the students' question. We all wondered why he gave this question in the test, because we all felt it meaningless."Certainly," said our teacher. "In your life you will meet many people. All of them are important. They should get your attention and care, even if all you do is smile or just say an easy 'hello' ." We all kept silent after hearing this.I've never forgotten that special lesson. I also learned her name was Dorothy.（1）What will the writer be when she graduates according to the passage?A . A teacher.B . A cleaner.C . A nurse.D . A soldier.（2）What can we learn from the third paragraph?A . The cleaning woman is the writer's aunt.B . The cleaning woman is tall and fat.C . The cleaning woman is more than fifty.D . The writer didn't want to tell others the woman's name.（3）Why did the writer leave the last question blank?A . Because she didn't know the cleaner's name.B . Because she didn't like the cleaner.C . Because she wanted to doubt her teacher.D . Because she wanted to know the teacher's answer.5. （10分）阅读理解Hunan TV station is very popular among young people in China. Are you interested in it? Do you think it's good or bad? Some students had a discussion about this question. Here are some opinions.A . NancyB . TommyC . LilyD . Daniel（2）Why does Nancy think the great people introduced by Human TVs station are her heroes?A . Because they are famous in Human.B . Because Nancy parents like them.C . Because they try their best to practice their shows.D . Because they sing very well.（3）Why does NOT Lily like the program Super Girl of Human TV station?A . Because the show is boring.B . Because she knows who will win.C . Because her parents don't like it.D . Because it makes her forget her study.（4）What can Daniel learn from Human TV station?A . Some famous hosts.B . Many jokes.C . His favorite things.D . Nothing.（5）How many people expressed their opinion in the passage?A . ThereB . FourC . FiveD . Six三、任务型阅读(每小题1分，共4分) (共1题；共4分)6. （4分）下面文章中有五处需要添加小标题, 请从以下选项(A、B、C、D、E和F)中选出符合各段意思的小标题。

安徽省亳州市高炉学校2022-2023学年八年级下学期第一次月考英语试卷(含答案)

安徽省亳州市高炉学校2022-2023学年八年级下学期第一次月考英语试卷(含答案)

2022-2023学年度（下）第一次阶段测试八年级英语满分：120分时间：120分钟第一部分听力(共四大题，满分20分)I．短对话理解（共5小题；每小题1分，满分5分）你将听到五段对话, 每段对话后有一个小题, 请在每小题所给的A、B、C三个选项中选出最佳选项。

每段对话读两遍。

( )1. What does the man want Susan to doA. B. C.( )2. What happened over thereA. B. C.( )3. How does Tina look todayA. Happy.B. Sad.C. Excited.( )4. How often should Gina take the medicineA. Once a day.B. Twice a day.C. Three times a day. ( )5.Who was ill A. Michael. B. Michael’s brother. C. Michael’s father.II．长对话理解（共5小题；每小题1分，满分5分）你将听到两段对话, 每段对话后有几个小题, 请在每小题所给的A、B、C三个选项中选出最佳选项。

每段对话读两遍。

听下面一段对话, 回答第6至7 两个小题。

( )6. What does the boy want to buyA. Some food.B. Some clothes.C. Some school things.( )7. How much money does the boy needA. $20.B. $40.C. $50.听下面一段对话，回答第8至10小题。

( )8. What is Tina doingA. Reading a book.B. Doing some chores.C. Doing her homework. ( )9. What doesn’t Tina’s father ask her to doA. To take out the rubbish.B. To sweep the floor.C. To clean up the table.( )10. When does Tina have to get homeA. Before 10:00 a.m.B. Before 9:00 p.m.C. Before 10:00 p.m. III．短文理解（共5小题；每小题1分，满分5分）你将听到一篇短文, 短文后有五个问题, 请根据短文的内容, 在每小题所给的A、B、C三个选项中选出最佳选项。

初二英语月考试卷

初二英语月考试卷

2011--2012学年度第二学期第一次月度检测八 年 级 英 语 试 题（考试时间：120分钟 总分:150分）第Ⅰ卷 选择题（共100分）一、听力（共30小题；每小题1分，满分30分）A) 从A 、B 、C 三幅图中找出与你所听内容相符的选项。

听两遍。

( )1. What will Amy get from her grandpa?( )2.Where does Stephen chat with his friends?( )3. What is Peter doing at present?( )4.Which is the following do they need?B) 听对话，根据所听对话及问题选择正确答案。

听两遍。

( )5.Why does Neil like the boy?A. Because the boy palys basketball very well.B. Because the boy is tall.C. Because the boy is in yellow.( )6.Why is there not much pollution in the town?A . Because it is small. B. Because there are no cars in the centre.C. Because there ’re not many people.( )7.Who ’s that woman?A.SusanB.Susan ’s motherC.Susan ’s aunt.( )8.Which school is Lucy in?A.No.1 Secondary School.B.No.11 Secondary School.C. No.12 Secondary School.( )9. What size shoes does the woman want to buy?A.Size eight.B.Size eighteen.C.Size eighty.( )10.Why is Jane worried?A. Because she can ’t find her book.B. Because her new bike is missing(丢了).C. Because she failed in her exam(考试).( )11. Where are they talking?A. In a library.B. In a bookshopC. In the museum.( )12. What does the girl think of her School life?A. Interesting.B. Boring.C. Happy.( )13. Will Millie go to the Summer Palace?A. No, it’s hard to say.B. No, she won’t.C. Yes, she will.( )14. Why can’t the girl sing now?A. Because she is ill.B. Because she doesn’t want to sing.C. Because the boy’s grandfather is sleeping.( )15. How long did the trip take?A. Four hours.B. Five hours.C. Six hours.C)听下面几段对话，选择正确答案。

八年级第二学期第一次月考试卷

八年级第二学期第一次月考试卷

八年级第二学期第一次月考物理试卷本试题分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分.第Ⅰ卷1至4页，第Ⅱ卷5至8页.满分100分，考试时间90分钟.第Ⅰ卷（选择题共45分）考生注意：每小题选出答案后，答案答在答题卡上.一.选择题（本大题共有20小题，每小题四个选项中只有一个正确.1-15小题每题2分，16-20小题每题3分，共45分）1.一元硬币的质量最接近A．0.5g B．5g C．50g D．500g2.用天平称一粒米的质量，下列说法中比较简单而又比较准确的是A.先称出 100 粒米的质量，再通过计算求得B.把 1 粒米放在一只杯子里，称出其总质量，再减去杯子的质量C.把 1 粒米放在天平上仔细测量D.把 1 粒米放在天平上多次测量，再求平均值3.在“用天平称物体质量”的实验中，张强同学用已调节好的天平在称物体质量时，通过增、减砝码后指针偏在分度盘中线左边一点，这时应该A．把横梁右端螺母向右旋出一些 B．把横梁右端螺母向左旋进一些C．把天平右盘的砝码减少一些 D．向右移动游码4.一间普通的教室,室内空气的质量约为(ρ空=1.29Kg/m3)A. 3KgB.30KgC.300KgD.3000Kg5. 通常人们所说“铁比棉花重”,实际上是指A.铁的质量比棉花的大B.棉花的体积比铁的大C.铁的密度比棉花的大D.棉花的密度比铁的大6. 下列说法正确的是A．“破镜难重圆”是因为固体分子间只存在着排斥力B．宇宙大爆炸理论认为宇宙诞生于大爆炸，爆炸引起宇宙膨胀C．在空调房间吸烟时，会看到烟雾在空中弥漫，这是分子的无规则运动D．原子核内质子所带的正电荷数与中子所带的负电荷数相等，所以平常物体不带电7.下列事例中,不能说明分子不停地做无规则运动的是A.打开香水瓶,不久满屋子都闻到香气.B.衣柜中的卫生球,过一段时间后体积变小甚至消失了.C.打扫教室地面时,在阳光下看到灰尘在空中飞舞.D.将一滴红墨水轻轻滴在一杯水中,过一段时间后,整杯水变红了.8.水的比热容较大，下列现象中，不属于利用水的这个特性的是A.供暖系统用循环热水供给暖气B.炎热的夏季在地上洒水纳凉C.用水作发动机的冷却液D.冬天在窑中放一桶水，可防止储存的蔬菜冻坏9.下列现象中,能说明分子永不停息的做无规则运动的是A.春天,柳絮飞扬B.夏天,槐花飘香C.秋天,黄沙扑面D.冬天,雪花飘飘10.下列说法正确的是A ．一块砖切成体积相等的两块后，砖的密度变为原来的一半B ．铁的密度比铝的密度大，表示铁的质量大于铝的质量C ．铜的密度是8.9×103kg/m 3，表示lm 3铜的质量为8.9×103kg D . 密度不同的两个物体，其质量一定不同 11.图1所示的是A 、B 两种物质的质量m 与体积V 的 关系图像，由图像可知，A 、B 两种物质的密度ρA 、ρB和水的密度ρ水之间的关系是A ．ρB >ρ水>ρA B ．ρB >ρA >ρ水C ．ρA >ρ水>ρBD ．ρ水>ρA >ρB12.托盘天平是科学实验中常用的仪器.下列有关其使用的说法中不正确．．．的是 A. 称量物体前首先应估计被测物体的质量，以免超过量程 B .称量时，向右移动游码，相当于向右盘加砝码 C. 不管桌面是否水平，只要调平横梁就可以称量 D .不能把化学药品直接放在托盘上称量13.一瓶纯净水喝掉一半后，剩下的半瓶水与原来的一瓶水比较A.质量减小,密度不变B.质量不变,密度不变C.体积减小,密度减小D.体积不变,密度减小 14.下列说法中不正确．．．的是 A.登月舱从地球到月球,质量变小B. 玻璃杯打碎后,形状发生了变化,质量不变 C. 一杯水结成冰后,体积增大,质量不变D.1kg 的铁与1kg 的棉花质量一样大图115.一刻度准确的杆秤,若其秤砣上粘上一块重物,那么用它称东西时,其读数A.将比实际质量大B.与实际质量相同C.将比实际质量小D.大小难以确定16.以下是某同学测定煤油的密度的一些实验步骤:(1)用天平测出空矿泉水瓶的质量m0；(2)在矿泉水瓶里装满水,用天平测出它们的总质量m1；(3)用矿泉水瓶装满煤油,用天平测出它们的质量m2；4)用量筒测出矿泉水瓶里所盛煤油的体积V；(5)计算煤油的密度.这些步骤中可省去的是A.(1)B.(2)或(4)C.(3)D.都不能省去17. 铝合金因具有坚固.轻巧.美观.易于加工等优点而成为多数现代家庭封闭阳台时的首选材料.这与铝合金的下列物理性质无关．．的是A.较小的密度B.较大的硬度C.良好的导电性D.较好的延展性18.下列过程中，物体的密度会发生变化的是A.把煤块碾碎后变成煤粉B.把铁屑熔化后浇铸成铁块C.把铜块投入热水中在取出D.冰熔化成水19.鸡尾酒是由几种不同颜色的酒调配而成的，经调配后不同颜色的酒界面分明，这是由于不同颜色的酒具有不同的．．．A．比热容 B．体积 C．温度 D．密度20.下列在宇宙探索过程中的一些学说中，既具有科学价值又具有巨大的人文价值的A．古人命名了许多星座B．托勒密提出“地心说”C．哥白尼提出“日心说”D．伽莫夫提出“宇宙大爆炸学说”八年级第二学期第一次月考物理试卷一.选择题答题卡第Ⅱ卷（非选择题 共55分）考生注意：1．答第Ⅱ卷前，考生务必将自己的姓名、考试号、座位号填写在指定位置. 2．考生答题时只能用蓝色或黑色钢笔、圆珠笔将试题答案写在试卷规定的位置上，写在草稿纸上无效. 二.填空题（本大题共有4小题，每空2分，共16分）21.市场上出售一种"金龙鱼"牌食用调和油,瓶上标有"5L"字样,已知瓶内调和油的密度为0.92×103kg/m 3,则该瓶油的质量是_________kg.如果调和油用去一半,则剩余半瓶调和油的密度为____________.22.古代的时候，人们都用纸糊窗户，而现代人们都用玻璃.因为玻璃的 比纸好，玻璃的 要比纸强.23. 酒精的密度是0.8×103kg/m 3,它的物理意义是 ，把酒精烧掉一半，剩余酒精的密度是 3kg/m 3.24.如图2所示，下面瓶子里装有红棕色的二氧化氮气体,它的密度大于空气的密度,当抽出玻璃板后,过了一段时间,上面瓶子里也出现了红棕色的二氧化氮，这里发生了 现象,它说明分子在 .图2三. 实验探究与解答题（本大题共有4小题，25题，26题每空3分，27题10分，28题11分，共39分）25. 用天平和量筒测某种矿石的密度.在调节天平时，发现指针如图3所示偏向分度盘的右侧，此时应将平衡螺母向________调.用天平称矿石的质量.把矿石放在天平的左盘，天平平衡时，放在右盘中的砝码和游码在标尺上的位置如图4所示.用量筒量出矿石的体积如图5所示，由此可知，矿石的密度=__________g/cm 3.26.物理活动课上，张老师做了一个有趣的实验：将一个黄色的乒乓球和一个玻璃球全部埋入装有米的大烧杯中，摇晃烧杯一段时间，乒乓球从米中“跑”了出来.看到这个现象，同学们十分惊讶：乒乓球为什么能“跑”出来，而玻璃球为什么不能“跑”出来？针对这个问题同学们提出下列猜想： 猜想1：因为乒乓球体积比玻璃球大；猜想2：因为乒乓球质量比玻璃球小.为了验证猜想是否正确，两天后，同学们用准备的一些器材进行探究： （1）取三个塑料空瓶A.B.C ，在A.B.C 瓶中装入质量不等的沙子，盖好瓶盖，分别测出它们的质量和体积. （2）把三个瓶子全部埋入盛有米的容器中，敲击容器，观察现象. （3）实验数据及现象记录如下表：（米的密度约为 1.37g/cm 3）（4）分析上述实验数据后回答：猜想1 （选填“正确”或“错误”）；猜想2 （选填“正确”或“错误”）.你认为一个乒乓球能从米中“跑”出来的原因是 .（5）运用这个现象所隐含的物理知识，能解决生活中的什么问题（试举一例或说出你的一个设想）？28.已知铁的密度ρ铁=7.9×103kg/m3,为了判断一个铁球是不是空心的，小明同学经过实验测量，得到如下数据：（1）进行这个实验用到哪些器材？（2）该铁球是空心的，还是实心的？（3）若铁球是空心的，空心部分的体积是多少？29.盐水选种是我国古代劳动人民发明的一种挑选种子的方法，选取优良稻种时，需要配置密度为1.1×103kg/m3的盐水，所配置的盐水是否符合要求，可采用取样分析的方法.设取500mL的盐水样品，称得其质量为600g.（1）请分析这样的盐水是否符合选种要求？（2）若不符合要求应加盐还是加水？（3）计算每1000mL这样盐水中应加入多少盐或水？。