11 We should not sacrifice environmental protections to foster economic growth environmental protections to foster economic growth.
A. reduce：减少，同义词：decrease
B. promote: v 晋升、提升、促进
C. realize：认识到、实现计划、了解到，常见搭配：
Realize ones mistake认识到自己的错误;realize ones hopes/plan/dream实现希望/计划/梦想;realize the truth of the event了解时间真相
D. give：给予
补充：foster是一个多义词，除了促进，还表示培养、培育、照顾、抚养， 如：foster mother养母;foster parents养父母。
请见教材上一道原题：
Government health campaigns have fostered an awareness of the dangers in certain social habits .
A. included B. discovered
C. cultivated
D. discouraged：使某人泄气，失去信心，反义词：encourage:鼓励，请注意dis-是一个常见的反义前缀。
12.There is a growing gap between the rich and the poor.
A. conflict：n 冲突、争执、分歧、v冲突、抵触
a conflict of interests利害冲突;
B. tension: n 紧张，同义词：nervousness
C. gulf: n 海湾、沟壑、分歧，常见搭配：gulf between A and B in sth
There is a gulf between the husband and the wife in education of their child.
D. confrontation: n 对抗、动词：confront.
一般用于： confront sb with sth让某人面对
有关gap,还有一个常见的表达：generation gap代沟
13.I am very grateful to you for your assistance.
A. helpful：有帮助的，反义词：helpless, 词组：be helpful to sb
He is always helpful to his mother.
B. hopeful:有希望的，反义词：hopeless, 常见搭配：be hopeful of/about对。。。抱有希望，如：I am hopeful of passing the exam.
C. pitiful: pity+ful 令人怜悯的、可怜的，反义词：pitiless: 无怜悯心的、残酷的
D .thankful：感激的、感谢的，反义词：thankless: 不感谢的、忘恩的，常见搭配：
be thankful to sb for sth = be grateful to sb for sth
得出结论：同义词的常见搭配也一样，后缀-ful和-less互为反义词。
14.You will be meeting her presently.
A. shortly：adv马上、立刻 Ill be coming back shortly.
B. currently: adv时下、当前，同义词组：at present = now
She is currently in Beijing.
C. lately: adv 最近，同义词：recently
How have been lately?近来可好?
D. probably： 可能地，反义词：improbably, 同义词：possibly.
presently = shortly = soon
15.Attitudes to mental illness have shifted in recent years.
A. displayed: 展示、陈列某物，显示、显露 display sth to sb
B. shown:原形show, 显示、展示，此时和display属近义词。
C. changed：高频核心词，含义丰富，改变、更换、交换、换乘、换衣服兑换货币，等等。
change ones idea/attitude改变主意/态度;change ones job换工作; change gear换挡; change sides改变立场; change train换乘火车;change dollars into RMB把美圆兑换成人民币。
D. demonstrated：v 证明、论证、表明、示威游行
16.I have been trying to quit smoking.
A. give up：停止、放弃，give up sth/doing sth, 如：
My husband gave up smoking last year.
B. pick up:捡起来、情况好转、通过实践学会、收取某物、接人、偶然结识某人等。
C. build up逐渐发展、增强
D. take up：占据、从事某事、
17.Relief workers were shocked by what they saw.
A. moved：感动的 B. touched：动人的、感人的
C. surprised: 吃惊的，be surprised at sth.
Im very surprised to see you here.
D. worried: 担心的、发愁的，同义词anxious,搭配：be worried about
He is worried about his exam.
所以：surprised = shocked = astonished
请见教材一道原题：mda.com
We were shocked to find that Mary didnt know her guests name.
A. frustrated B. disturbed
C. relieved D. surprised
18.The weather is a constant subject of conversation in Britain.
A. question： 问题、疑问、询问，常见的搭配：an open question未解决的问题、允许公开争论的问题
B. problem问题、难题，solve a problem解决问题;
C. title 名称、题目、标题、头衔
D. topic话题、主题
19.This is not typical of English, but is a feature of the Chinese language.
A. particular：个别的、特别的、挑剔的，如：his particular problems他的个人问题; particular importance特别的重要; shes very particular about her clothes.
B. characteristic： 典型的，常见搭配：be characteristic of = be typical of
C. remarkable: 不同寻常的、出类拔萃的，同义词：unusual = exceptional = extraordinary
D. idiomatic: 来自于idiom习语、成语;idiomatic符合语言或方言的特点的
20.It is virtually impossible to persuade him to apply for the job.
A. simply：简单地、仅仅 I bought the house simply because it was very big.
B. almost几乎、差不多。 She is almost 40 years old.
C. totally = completely = entirely 完全地、全部地
D. completely = totally
补充：persuade sb to do sth劝说某人做某事