模拟试题(四科)_secret

2019 年 12 月大学英语四级考试模拟试卷及答案(21)PartⅡ Reading Comprehension (35 minutes)Directions ： There are 4 passages in this part.Eachpassage is followed by some questions or unfinishedstatements.For each of them there are four choices markedA),B),C) and D).You should decide on the best choice and markthe corresponding letter on the Answer Sheet with a single linethrough the center.Questions 21 to 25 are based on the following passage：Some radio singals were heard in 1967.They were comingfrom a point in the sky where there was unknown star.Theywere coming very regularly,too ：about once a second,if theywere controlled by clock.The scientists who heard the signals did not tellanybody else.They were rather afraid to tell in case theyfrightened people.The signals were coming from a very smallbody—no bigger,perhaps than the earth.Was that why no lightcould be seen from it?Or were the signals coming from aplanet that belonged to some other star?There was no end tothe questions,but the scientists kept the newssecret. “Perhaps there are intelligent beings outthere. ”they thought, “who are trying to send messages toother planets,or to us?So the news was not given to thenewspaper.Instead,the scientists studied the signals andsearched for others like them...Well,all that happened in1967 and 1968.Since then scientists have learnt more aboutthose strange,regular,radio signals.And they have toldthe story,of course.The signals do not come from a planet;they come from anew kind of star called a “pulsar ”” .About a hundred other pulsars have now been found,and most of them are very like the first one.Pulsars are strong radio stars.They are the smallest butthe heaviest stars we know at present.A handful of pulsarwould weigh a few thousand tons.Their light —if they give muchlight —is too small for us to see.But we can be sure of this,no intelligent beings are living on them.21.The radio signals discussed in this passage____.A.were regularB.were controlled by a clock答案1短文大意1967 年人收到了一些太空信号。

2021-2022学年浙江省学业水平考试仿真模拟卷（四）一、单选题（本大题共18小题，共54分。

在每小题列出的选项中，选出符合题目的一项）1.已知，，，，则集合A可以为( )A. B. C. D.2.( )A. B. C. D.3.i为虚数单位，在复平面内，复数对应的点位于( )A. 第一象限B. 第二象限C. 第三象限D. 第四象限4.已知命题，，则p的否定为( )A. ，B. ，C. ，D. ，5.已知向量，满足，和的夹角为，则( )A. B. C. D. 16.已知a，，则是的( )A. 充分不必要条件B. 必要不充分条件C. 充要条件D. 既不充分又不必要条件7.已知函数是定义在上的偶函数，且当时，的图象如图所示，则的值域是( )A. B. C. D.8.为了解学生的身体状况，某校随机抽取了一批学生测量体重.经统计，这批学生的体重数据单位：千克全部介于45至70之间.将数据分成5组，并得到如图所示的频率分布直方图.图中a的值为( )A. B. C. D.9.若，，则的值为( )A. B. C. D.10.的值为( )A. B. C. 1 D. 211.的零点所在区间是( )A. B. C. D.12.随着网络技术的发展，非现金支付变得愈发流行，微信支付和支付宝支付就是两种常用的非现金支付方式.某群体中的成员只用现金支付的概率为，既用现金支付又用非现金支付的概率为，则只用非现金支付的概率为( )A. B. C. D.13.函数的图象可能是( )A. B.C. D.14.在空间中，设m，n为两条不同的直线，，为两个不同的平面，则下列说法中正确的是( )A. 若且，则B. 若，，，则C. 若且，则 D. 若m 不垂直于，且，则m 必不垂直于n15.在三角形ABC 中，，，P 为线段DE 上的动点，若，l ，，则( )A. 1B.C.D. 216.已知三棱柱的侧棱与底面边长都相等，在底面ABC 上的射影为BC 的中点，则异面直线AB 与所成的角的余弦值为( )A. B. C. D.17.如图所示，在长方形ABCD 中，，，E 为线段DC 上的一个动点，现将沿AE折起，使点点D 折起后的点在平面ABC 内的射影K 在直线AE 上，则当点E 从D 运动到C 时，点K所形成的轨迹的长度为( )A. B. C. D.18.已知函数则函数的零点个数是( )A. 2B. 3C. 4D. 5二、填空题（本大题共4小题，共15分）19.已知向量，，__________，__________.20.已知，，当时，关于x的不等式恒成立，则的最小值是__________.21.在中，，，且，则__________.22.在矩形ABCD中，，点E为线段CD中点，如图所示，将沿着AE翻折至点不在平面ABCD内，记线段中点为F，若三棱锥体积的最大值为，则线段AB长度的最大值为__________.三、解答题（本大题共3小题，共31分。

英语四级考试考前模拟试题与解析Part I: Listening Comprehension (40 marks)Section A: Short Conversations1. M: Are you going to attend the lecture on environmental protection this afternoon?W: No, I have a history class at the same time.Q: What is the woman's reason for not attending the lecture?A: She has a history class at the same time.2. W: Excuse me, is this seat taken?M: No, it's not. Please have a seat.Q: What does the man mean?A: The seat is available.Section B: Passages3. W: How did you like the museum?M: Oh, it was fantastic! They had an exhibition of ancient Chinese artifacts.Q: What does the man think of the museum?A: He thinks it's fantastic.4. W: Why did you switch your major from engineering to psychology?M: I found myself more interested in studying the human mind and behavior.Q: Why did the man switch his major?A: He was more interested in studying psychology.Part II: Reading Comprehension (60 marks)Section A: Multiple Choice QuestionsPassage One5. According to the passage, what is a major benefit of studying abroad?A: Experiencing a different culture.Passage Two6. What is the main idea of the passage?A: The impact of social media on mental health.Section B: True or False StatementsPassage Three7. The Great Barrier Reef is known for its rich marine biodiversity.A: TruePassage Four8. The author suggests that reducing meat consumption is essential for protecting the environment.A: TruePart III: Vocabulary and Structure (40 marks)9. Emily is very _____ about saving money, so she never buys anything that she doesn't need.A: thrifty10. The book, _____ "The Catcher in the Rye," has been assigned for our English literature class.A: titledPart IV: Translation (20 marks)11. Translate the following sentence into English:昨天我和我的朋友们一起去了海边度假。

专四模拟试题及答案解析一、听力理解（共20分）1. A) 5:00 pm B) 6:00 pm C) 7:00 pm D) 8:00 pm答案：C解析：对话中提到了“我们7点在图书馆门口见”，因此正确答案是C。

2. A) 会议 B) 讲座 C) 电影 D) 音乐会答案：A解析：在听力材料中，提到了“我们下周一有个会议要开”，所以正确答案是A。

3. A) 30分钟 B) 1小时 C) 2小时 D) 3小时答案：B解析：根据对话中的信息“我需要1小时来完成这个报告”，可以得出正确答案是B。

二、阅读理解（共30分）1. 根据文章内容，以下哪项是作者的主要观点？A) 教育是社会发展的关键。

B) 环境问题需要全球合作解决。

C) 科技发展对人类生活产生了巨大影响。

D) 经济发展应该以环境保护为前提。

答案：A解析：文章中多次强调教育的重要性，并指出教育是推动社会发展的核心力量。

2. 文章中提到的“绿色革命”指的是什么？A) 农业技术的进步B) 环境保护运动C) 能源的可持续性D) 工业生产的绿色化答案：A解析：在文章的第二段中提到了“绿色革命”是指农业技术的进步，旨在提高农作物产量并减少对环境的破坏。

3. 作者对于未来的看法是什么？A) 乐观的B) 悲观的C) 现实的D) 怀疑的答案：C解析：作者在文章结尾部分提到了对未来的展望，认为虽然面临挑战，但通过努力和合作，可以解决这些问题，显示出一种现实的态度。

三、完形填空（共20分）1. A) However B) Therefore C) Moreover D) Furthermore答案：B解析：根据上下文的逻辑关系，此处应使用表示因果关系的连词，因此正确答案是B。

2. A) increase B) decrease C) remain D) fluctuate答案：A解析：根据前文提到的“随着经济的发展”，可以推断出人口数量会“增加”，所以正确答案是A。

3. A) despite B) because C) if D) unless答案：A解析：此处表示的是让步关系，即使面临困难，也要继续努力，因此正确答案是A。