第一学期西南交通大学英语III第1次作业答案

本次作业是本门课程本学期的第1次作业，注释如下：大学英语III 第1单元 作业题 一、单项选择题(只有一个选项正确，共40道小题) 1. – Hello, may I speak to Mr. Clinton? – _________________ (A) Yes, I am Clinton. (B) Thank you for calling me. (C) This is Clinton speaking. (D) Yes, who are you?

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：C

解答参考：[第一单元]C 当别人打电话来找某人，而你就是别人要找的人，可直接说 Speaking. 或 It’s … speaking./ This is … speaking. 而不能说 I am …. 或 … is me. 当你想知道是谁打的电话，应该说 Who is this? 或 Who’s calling?/ Who’s speaking? 不能说 Who are you? B项不符合本题的对话内容。

2. – ABC Company, may I help you? – _________________

(A) I am Jack. May I speak to Miss Jenny?

(B) This is Jack speaking. May I speak to Miss Jenny? (C) This is Jack speaking. Can I find Miss Jenny? (D) I am Jack. Can I find Miss Jenny? 你选择的答案： B [正确] 正确答案：B

解答参考：[第一单元]B 打电话时做自我介绍，应该说 This is …/ It’s … 不能说 I am … 所以A、D两项都是错误的答案。当你想让某人接听电话时应使用 May I speak to …？而Can I find …？显得不太礼貌，也不符合英语电话用语习惯。

3. – Hello, I need to get in contact with Mr. Fox right away. – __________________ (A) What’s the matter, please? (B) Hi, I’m listening. (C) It’s Fox, who are you? (D) Hold on, please.

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：D

解答参考：[第一单元]D get in contact with … 和……联系。该题题干是表明说话者有急事找福克斯先生，只有D项符合本题，Hold on, please. 请稍等一下。

4. – Would you transfer this call to the Financial Department? – _________________ (A) Yes, I can’t.

(B) No, somebody else is on the phone. (C) Sorry, the line is busy. (D) Yes. But you should wait.

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：C

解答参考：[第一单元]C 该题题干是请求接线员将电话转接财务部，而选项是接线员说的话。请求时可用Would you transfer this call to ××××(电话号码)？接线员通常回答 Yes, I’ll put you through. 但尝试后接不通或对方号码占线时，应说 Sorry, the line/number is busy/engaged. 也可再加上 Will you hold on? （不要挂断电话，让我再试一下好吗？）

5. – Hello, may I talk to Jerry?

– Sorry, he is out of the office right now. _________________ – Yes, thank you. (A) Can I help you? (B) What can I do for you? (C) Would you like to hold?

(D) Would you like to leave a message? 你选择的答案： D [正确] 正确答案：D

解答参考：[第一单元]D 依据对话中的上下文推断可知要找的人不在，而接电话的人则询问是否需要帮捎个口信，故选D。

6. – Hi, is Thomas there? – _________________ (A) No, he is not there. (B) Sorry, I’ll call him. (C) Hold on. I’ll get him. (D) Yes, Thomas is me. 你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 当别人打电话来找某人而此人在时，可用Hold on. I’ll get him/her. 意为―请别挂断，我去叫他/她。‖若此人刚好不在，可用 I’m sorry. He/She isn’t in. 或 He/She’s out. 接下来还可以说 Can I take a message for him/her? 请别人留言。A项不太礼貌，且不符合英语习惯。B项说法不准确。D项不是电话用语。若你就是别人要找的人，可直接说 Speaking. 或 It’s Thomas speaking. 而不能说 I am Thomas. 或 Thomas is me.

7. – Hello, I’d like to speak to Mr. Wang. – He’s out to lunch now. __________________ – Sure, thank you. (A) Sorry, you can’t. (B) I don’t know. (C) No, you can’t.

(D) Would you mind calling back later? 你选择的答案： D [正确] 正确答案：D

解答参考：[第一单元]D 依据对话中的上下文推断可知王先生出去吃午饭了，接电话的人则询问是否介意稍后再打电话，对方表示同意。其他A，B，C项都不符合题意。

8. Excuse me, is this the Sale’s Department? – _________________ – I am so sorry.

(A) I’m afraid you have the wrong number. (B) You are wrong.

(C) What’s wrong with you? (D) What are you talking about? 你选择的答案： A [正确] 正确答案：A

解答参考：[第一单元]A 根据上下文可知打电话的人一定是拨错电话号码了。在英语中，表达对方打错电话了可用―I am afraid you have the wrong number.‖自己意识到打错电话则可以用―I’m sorry. I must have misdialed./I’m afraid I have the wrong number.‖而B，C，D三项则不够礼貌。

9. Excuse me, it’s urgent I’d like to talk to your manager. – _________________ (A) Yes, I’ll make you through.

(B) Sorry, can you tell me who you are? (C) Hold the line, please. I’ll put you through. (D) Yes. But you have to wait. 你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 只有C项符合用英语打电话的习惯，解答同4题。

10. – Hello, may I speak to Mike? – _________________

– Sorry, I must have misdialed. (A) You are wanted on the telephone. (B) There’s nobody named Mike here. (C) Just a second, please.

(D) Can I take a message for him? 你选择的答案： B [正确] 正确答案：B

解答参考：[第一单元]B 依据选项处的上下文来推断，一定是打错电话了，只有B项符合题意，其他三项都与上下文矛盾，故不能选。

11. The accident was _____ to careless driving.

(A) for (B) likely (C) due (D) because

你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C due to是固定搭配，意为―由于，因……而产生‖。 【译文】这起事故起因于粗心驾驶。

12. The news made the old lady very _____. (A) sadder (B) sad (C) sadly (D) sadness

你选择的答案： B [正确] 正确答案：B

解答参考：[第一单元]C due to是固定搭配，意为―由于，因……而产生‖。 【译文】这起事故起因于粗心驾驶。

13. He stressed that the disadvantages of the change would _____ its advantages. (A) overtake (B) outweigh (C) overcome (D) beyond

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：B

解答参考：[第一单元]C due to是固定搭配，意为―由于，因……而产生‖。 【译文】这起事故起因于粗心驾驶。

14. I can’t find _____. (A) a coat enough large (B) a large enough coat (C) a large coat enough (D) an enough large coat 你选择的答案： B [正确] 正确答案：B

解答参考：[第一单元]B 此题考察enough的位置。enough adv. 足够地, 充分地，放在所修饰 的形容词后。 【译文】我找不到一件足够大的外套。

15. Over a third of the population was estimated to have no _____ to the health service.

(A) assessment (B) assignment (C) exception (D) access

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：D

解答参考：[第一单元]D access to 使用，接近，或进入之途径或权利；assessment n. 估价； assignment n. 任务； exception n. 例外 【译文】估计有1/3以上的人口享受不到医疗保健服务。

16. – In our English study reading is more important than speaking, I think. – I don’t agree with you. Speaking is ________ reading. (A) as important as (B) so important as (C) the most important (D) the same as

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：A

解答参考：[第一单元]A 此题考查―同等比较‖的用法，句式中的―as…as…‖结构意为―和……一样……‖，其中的形容词或副词用原级。 【译文】 ——我认为英语学习中读比说重要。 .——我不这么认为。说和读是同等重要的。

17. His lectures on Roman history would do credit _____ a real expert. (A) in (B) to (C) of (D) with

你选择的答案： B [正确] 正确答案：B

解答参考：[第一单元]B do credit to 为……带来光荣（荣誉） 【译文】他关于罗马史的讲座成就了他的专家美誉。

18. Someone is knocking at the door _____. (A) aloud (B) loud (C) loudly (D) aloudly

你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 此题考察副词的辨析。aloud adv. 大声地（与cry，call，shout一类动词连用）；loud adv. 高声地（与talk，speak，laugh，read等动词连用，放在动词之后）；loudly adv. 响亮地, 大声地（使用范围较广，有时有―喧闹‖的意味） 【译文】有人在大声敲门。

19. I fail to _____ ever meeting her. (A) recall (B) pretend (C) plan (D) hope

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：A

解答参考：[第一单元]A 此题考察动词的辨析。recall 后面有宾语时，要接动名词形式；pretend假装；plan 计划；hope 希望 【译文】我想不起曾经见过她。

20. I was _____ by their kindness and moved to tears. (A) preoccupied (B) embarrassed (C) overwhelmed (D) counseled

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：C

解答参考：[第一单元]C 此题考查动词意义辨析。 preoccupy 使全神贯注；embarrass 使窘迫；overwhelm 使不知所措；counsel 劝告 【译文】他们的善意深深地感动了我，使我热泪盈眶。

21. Doesn’t the clown look _____ ? (A) fun (B) laugh (C) laughter (D) funny

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：D

解答参考：[第一单元]D 此题考察形容词作表语。感官，感觉动词后面要求用形容词作表语，常见的有see、 appear、 look、sound、smell、taste、feel等。 【译文】这个小丑看上去不是很滑稽么？

22. My camera can be _____ to take pictures in cloudy or sunny conditions. (A) treated (B) adjusted (C) adapted (D) remedied

你选择的答案： B [正确] 正确答案：B

解答参考：[第一单元]B 此题考察动词意义辨析。 treat 对待，处理； adjust 调整，调节；adapt 使适应； remedy 治疗，纠正 【译文】我的照相机可以调节，不论阴天还是晴天都可以照相。

23. The football game comes to you _____ from New York . (A) lively (B) alive (C) live (D) living

你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 此题考察形容词辨析。lively 活泼的，活跃的；alive 活着的，活泼的；live 活的，生动的，精力充沛的，实况转播的；living 活的, 起作用的, 逼真的, 现存的 【译文】这场足球赛是从纽约实况转播的。

24. I try to _____ a few dollars each month in order to buy a new bike. (A) set up (B) set out (C) set off (D) set aside

你选择的答案： D [正确] 正确答案：D

解答参考：[第一单元]D set aside 留出（专用的时间或金钱）； set up建立；set out 出发，开始； set off 出发，动身 【译文】为了买一辆新的自行车，我尽力每个月都留出一些钱。

25. With _____ three inches of rain falling in a six-month period, the farmers found it necessary to irrigate the land. (A) less than (B) fewer than (C) little than (D) less few than 你选择的答案： A [正确] 正确答案：A

解答参考：[第一单元]A 此题考察比较级的用法。首先排除C和D，二者都是错误的表达。只能选A，less than用在表示一定时间、数量或距离的复数名词前，意思是―少于……‖，属于固定搭配。 【译文】由于在六个月里的降水量只有不到三英寸，农民们感到有必要灌溉农田了。

26. Clark felt that his _____ in one of the most dramatic medical experiments of all time was worth the suffering he underwent. (A) apprehension (B) appreciation (C) presentation (D) participation

你选择的答案： D [正确] 正确答案：D

解答参考：[第一单元]D 此题考查后缀 -tion和 –sion构成的名词辨析。apprehension 理解； appreciation 欣赏； presentation 陈述； participation 参与 【译文】克拉克认为能参加有史以来最令人激动的医学实验，再苦也值得。

27. He bought a _____ carpet yesterday. (A) large beautiful green Chinese (B) Chinese beautiful large green (C) beautiful large green Chinese (D) Chinese green beautiful large 你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 此题考察数个形容词同修饰一个名词时的排序。一般是―表示特性的词(nice, good, etc.)＋大小＋年龄＋形状＋颜色＋国籍、地区、出处‖，如：the tall young American policeman。 【译文】他昨天买了一张既美丽又宽大的绿色中国地毯。

28. He said that the driver must have had an accident; otherwise he _____ by then. (A) would have arrived (B) must have arrived (C) should arrive (D) arrived

你选择的答案： A [正确] 正确答案：A

解答参考：[第一单元]A otherwise 引出的与过去事实相反的虚拟语气 【译文】他说司机一定出事了，要不然那时他应该已经到了。

29. – I will give you some picture books. – The ________， the ________. (A) more； better (B) many； better (C) most； best (D) much； better 你选择的答案： A [正确] 正确答案：A

解答参考：[第一单元]A 考查―The +比较级……，the +比较级……‖结构的用法。 【译文】——我会给你一些图画书。——越多越好。

30. It’s very _____ of you not to talk aloud while the baby is asleep. (A) concerned (B) careful (C) considerable (D) considerate

你选择的答案： D [正确] 正确答案：D

解答参考：[第一单元]D 此题考察形容词的辨析。considerate 考虑周到的；be concerned for/ about/ with 对……关心； be careful of/ about/ with 对……当心；considerable 相当大（多）的，值得考虑的 【译文】婴儿睡着了你就小声说话，你真是考虑的太周到了。

31. Don’t blame the youth. I think the young generation is _____ of trust. (A) worth (B) worthy (C) worthless (D) worthwhile

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：B

解答参考：[第一单元]B 此题考察相近形容词的辨析。worth 值钱的，值的看中的（be worth (doing) sth.）；worthy 有价值的, 应……的（be worthy of sth. 应得某事物）；worthless 无价值的，无益的；worthwhile 值得做的，值得出力的（it’s worthwhile doing/to do sth.） 【译文】不要责怪年轻人。我认为年轻一代应该得到信任。

32. A healthy life is frequently thought to be _____ with the open countryside and home growth food. (A) tied (B) bound (C) involved (D) associated

你选择的答案： D [正确] 正确答案：D

解答参考：[第一单元]D tie 和involve不与with搭配 bound可以做―联系‖讲，但是搭配是be bound up with。 【译文】人们常常把健康的生活与开阔的乡村和自家种的食物联系在一起。

33. The new edition of this book is _____ expensive than the old one . (A) fewer (B) more much (C) less (D) a little

你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 此题考察形容词比较级。 【译文】这本书的新版本比旧版本便宜。

34. Being deaf hasn’t stopped Karen _____ her ambition to be a hairdresser. (A) fulfilling (B) finishes

(C) fulfills (D) finishing

你选择的答案： A [正确] 正确答案：A

解答参考：[第一单元]A fulfill v. 实现；finish v. 完成；stop sb. (from) doing sth. 阻碍某人做某事 【译文】耳聋并没有能阻碍凯伦实现她成为一名理发师的理想。

35. This street is much ________ than that one. (A) straight (B) straighter (C) straightest (D) more straighter 你选择的答案： B [正确] 正确答案：B

解答参考：[第一单元]B 此题考查much，even，still，far，a lot，a great deal等程度副词(短语)修饰形容词或副词比较级的用法，句中常用―程度副词(短语)+形容词/副词的比较级……(than) ……‖结构。 【译文】这条街比那一条直多了。

36. There are few scientific and technical books that are not ______at our university library. (A) available (B) bought (C) determined (D) valuable

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：A

解答参考：[第一单元]A available 可用到的, 可利用的；bought 是buy的过去分词；determine 决定，下决心；valuable 有价值的 【译文】在我们大学的图书馆，几乎没有什么科学技术方面的书是找不到的。

37. Thomas said that he was late because he was caught in a traffic jam. That was a _____ story.. (A) like (B) alike (C) likely (D) liking

你选择的答案： [前面作业中已经做正确] [正确] 正确答案：C

解答参考：[第一单元]C 此题考察词的辨析。like n. 爱好 adj. 相似的 v. 喜欢 prep. 像；alike adj. 相似的 adv. 以同样的方式；likely adj. 很可能的，有希望的 adv. 或许，很可能；liking n. 爱好，嗜好 【译文】托马斯说他是因为交通堵塞才迟到的。这很有可能。

38. You see the lightning _____ it happens, but you hear the thunder later.

(A) the instant (B) for an instant (C) on the instant (D) in an instant 你选择的答案： A [正确] 正确答案：A

解答参考：[第一单元]A the instant 相当于when的用法。on the instant 立即，马上；for an instant 有一会儿 【译文】一闪电你就会看到光，但过一会你才能听到雷声。

39. When his wife and two little children left him, he was very _____ . (A) alone (B) along (C) lonely (D) lonelier

你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 此题考察alone和lonely的辨析。alone 独自一人的，孤单一人的（通常用作表语形容词）；lonely 孤独的，寂寞的（通常用作定语形容词） 【译文】妻子和两个孩子离他而去后，他很孤独。

40. They regard these men as their _____ enemies. (A) death (B) dead (C) deadly (D) deadlines

你选择的答案： C [正确] 正确答案：C

解答参考：[第一单元]C 此题考察词的辨析。death n. 死，死亡；dead adj. 死的，无感觉的，呆板的；deadly adj. 致命的，势不两立的；deadline n. 最终期限 【译文】他们把这些人看作他们的死对头。

（注意：若有主观题目，请按照题目，离线完成，完成后纸质上交学习中心，记录成绩。在线只需提交客

观题答案。)

二、主观题(共1道小题)

三、阅读理解、完形填空题(共5道小题) 42.

Online degree programs have come a long way since their early days. Traditional colleges and universities have developed distance learning programs to accommodate individuals who would not otherwise have the time or funds to earn an advanced degree. Online programs require the same amount of study and work as a classroom program. If you are under the impression that courses offered online will be a walk in the park, think again! Online degree programs are often more difficult than traditional university programs due to the fact the work and study is left up to the student. Time management skills are crucial, since there is not a particular time of the day set aside specifically for study. It may take some time to become accustomed to this method of scholarship, but the pros of online classes may outweigh the cons in your situation.

The main difference between online degree programs and traditional higher education is the location of learning. Instead of being confined to a stuffy classroom filled with students, these online classes have a more personal feeling. While many students would be hesitant to speak one to one with a class instructor, online programs find their students more willing to contact their profes sors via e-mail. This great participation encourages better understanding of the course material. Of course, not attending a class also comes with additional barriers. A student must be equipped with time management skills in order to succeed in an online class. Students that lack the proper time management skills may find themselves overwhelmed with course work at the end of the semester or falling behind in their studies.

Whether you choose to attend a traditional college or university or enroll in an online higher education program, the chances of success are equal. In the end, it is up to you in order to complete the course of study and earn your degree. For busy individuals or students wishing to return to school without greatly affecting their everyday lives, an online degree program may be the best option. [共5题]

(1) According to the passage, the main difference between online degree programs and traditiona

l higher education is __________.

(A) the requirement for time management skills (B) the place where students choose to study (C) the tuition students have to pay

(D) the knowledge students learn from the class 你选择的答案： 前次作业时已经做对 [正确] 正确答案：B

(2) Which of the following is TRUE about online degree programs? (A) Online degree programs are very easy for most of the students.

(B) The students in online classes are shy to communicate with the professors.

(C) Online degree programs can help students make progress in understanding the course material.

(D) Online degree programs are better than traditional higher education. 你选择的答案： 前次作业时已经做对 [正确] 正确答案：C

(3) Which of the following is NOT the advantage of online degree programs?

(A) Students can benefit from the flexible time-tables provided by online degree programs. (B) Students can enjoy more personal feeling from online degree programs. (C) Students have to stay in the classroom for a whole day.

(D) It’s much easier for students to exchange ideas with the teachers via e-mail. 你选择的答案： 前次作业时已经做对 [正确] 正确答案：C

(4) To succeed in online degree programs, it is necessary for the students to __________. (A) make a plan on how to use their time (B) communicate with the classmates (C) listen carefully to the teachers (D) finish their homework

你选择的答案： 前次作业时已经做对 [正确] 正确答案：A

(5) Online degree programs are most appropriate to __________. (A) the people who are unemployed

(B) the people who lack time management skills (C) the people who have more free time

(D) the people who want to earn an advanced degree but busy with their own business 你选择的答案： 前次作业时已经做对 [正确] 正确答案：D 参考答案：

[第一单元]; 第5小题：D 推断题。根据第一段的第二句―…individuals who would not otherwise have the time or funds to earn an advanced degree.‖（一些传统高校开设了远程教育课程，以帮助那些没有空余时间或没有足够资金的人获得更高的学位）。因此选D，网络教育最适合那些忙于工作但又想获得更高学位的人。 43.

Successful and happy distance learners have a few characteristics in common. Compare yourself to the following list to determine whether or not online classes are a good fit for your personality and habits.

1. Successful distance learners do just as well, if not better, without people looking over their shoulder. While some people need teachers to keep them motivated and on-task, distance learners are able to motivate themselves. They realize that they will never be face-to-face with the people who give them assignments and grade their work, but they don’t need others to encourage them. The most successful students are self-motivated and set their own goals.

2. Successful distance learners never (or at least rarely) put off their assignments or wait until the last moment to write their papers. These students enjoy the freedom of working at their own pace and appreciate the ability to complete their work in as much time as it takes them, instead of waiting for an entire class. However, they understand that putting off their work too often can end up adding months, if not years, to their studies.

3. Successful distance learners have good reading comprehension skills. While most people learn by listening to lectures and taking notes, the majority of distance learners are expected to master material through reading alone. Although some distance learning courses offer video recordings and audio clips, most programs require that students understand a large amount of information that is only available through written text. These students are able to comprehend texts at the college level without the direct guidance of a teacher.

4. Successful distance learners can resist constant distractions. Whether it’s the phone ringing off the hook, the kids screaming in the kitchen, or the temptation of TV programs, everyone faces distractions. Successful students know how to filter out the constant disturbances that threaten their progress. They feel comfortable turning down an invitation or letting the machine pick up the phone when they know there is work to be done. [共5题]

(1) Which of the following is NOT included in the successful distance learners’ characteristics? (A) Being self-motivated. (B) Being self-disciplined.

(C) Being with good reading comprehension skills. (D) Being easy to distract attention. 你选择的答案： D [正确] 正确答案：D

(2) If putting off his work too often, what will happen to this student? (A) An entire class will wait for him. (B) The professor will punish him. (C) He has to postpone his graduation.

(D) Nothing will happen to him. 你选择的答案： C [正确] 正确答案：C

(3) The phrase ―filter out‖ in the last paragraph means __________. (A) choosing something to learn (B) getting rid of the disturbances (C) working out a plan (D) solving the problem 你选择的答案： B [正确] 正确答案：B

(4) What we can infer from this passage is that __________.

(A) distance learners will never refuse the invitation for coming out because they are free (B) only with written texts provided by online class, reading comprehension skills are very important to distance learners

(C) traditional learners can enjoy the freedom of working at their own pace

(D) even without good reading comprehension, traditional learners still can make progress with the help of teacher 你选择的答案： D [正确] 正确答案：D

(5) Based on this passage, the author intends to tell us that __________. (A) online learning is the perfect option for everyone (B) no one would like to enroll at a traditional school

(C) learners must consider whether they have the qualities to attend online classes before making their decision

(D) online learning will take the place of traditional school in future 你选择的答案： C [正确] 正确答案：C 参考答案：

[第一单元]; 第5小题：C 主旨题。文中作者列举了成功的网络学习者所应具备的一些特征，这说明在做决定以前，学习者得衡量自己是否适合选择网络课堂。因此选C。 44.

If you want to stay young, sit down and have a good think. This is the research finding of a team of Japanese doctors, who say that most of our brains are not getting enough exercise-and as a result, we are ageing unnecessarily soon.

Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age, and how the proc ess of ageing could be slowed down.

With a team of colleagues at Tokyo National University, he set about measuring brain volumes of a thousand people of different ages and varying occupations.

Computer technology enabled the researchers to obtain precise measurements of the volume of t

(C) point out (D) point for

你选择的答案： C [正确] 正确答案：C (10) (A) exceed (B) exceeding (C) exceeded (D) exceedingly 你选择的答案： B [正确] 正确答案：B 参考答案：

[第一单元]; 第10小题：B 分词结构的用法，这句话意为―一些批评者指出，网络课堂的退学率明显高于面对面的现实课堂，有时甚至超过40％。‖在这句话中，分词结构的逻辑主语是―dropout rates for e-classes‖，和―exceed‖是呈主动关系，只能用现在分词，故选B

本文来源：https://www.bwwdw.com/article/nx8f.html