根据题意，选择最佳答案，或者选取最合适的答案。

1. Our teachers often advise us ________ carefully in class.
   Listen to listen
解析：试题分析：句意：我们的老师们经常建议我们在课堂上多认真地听讲。分析：考查动词的词形变化，同时考查固定短语advice sb. to do sth.建议某人做某事。因此选择第三项。故选B
2. _______, women have changed history in terms of the contributions they have made. 。
   To some extent In conclusion
解析： 解析试题分析：A. To some extent某种程度上，(多少)有一点，有所，B. In conclusion总之，，句意：在某种程度上，就女性做出的贡献来说，她们已经改变了历史。所以选A
3. What does the symbol “<” mean? —It means “______”.
   degree smaller than
解析：试题分析：degree程度，等级；smaller than小于；more更多的。句意：这个“<”符号的意思是什么？他的意思是小于。故选B
4. Much attention should be paid ____ the wild animals as many of them are dying out.
   to protecting to protect
解析：答案A 解析试题分析：句意:我们应该注意保护野生动物，因为很多野生动物都快灭绝了。根据句意可知，本句中使用的是短语pay attention to注意……的被动形式。短语中的to 是一个介词，因此它后面应该跟动名词的形式，故应该选A。
5. More often, the air in Hangzhou is dirty because of _____.
   temperature pollution
解析：试题分析：句意：因为污染，杭州的空气质量更经常地变差 B.pollution 污染 A.temperature气温，空气因为污染变脏，故选B
6. I’m going to join a party with Jay Chou!
   a lucky dog a cold fish
解析：试题分析：句意：---我要去参加周杰伦的聚会了。---祝贺你！你真的是个幸运儿；a cold fish冷漠的人；a此题考查情景交际，a lucky dog一个幸运儿；根据句意，故选A
7. She made a in our plan to play basketball when it started to rain.
   Turn switch
解析：试题分析：句意：当下雨的时候，她对我们去打篮球的计划做了改动turn 不与 make 搭配；此处 make a switch 意为“做了一个更改” 。选B
8. There are ________ books in the National Library.
   twenty millions twenty million
解析：试题分析：句意：在国家图书馆里有2千万本书。million 百万，跟数词连用时不用复数形式；或者用于短语millions of，成百万的。故选B
9. Nothing is ________ if you put your heart into it .
   possible Difficult
解析：试题分析：句意：如果你用心去做，没有什么事情是困难的。分析选项：difficult困难的；possible可能。联系从句，用心做，没有什么是困难的。因此明确第二项正确。故选B
10. Last year my sister ___________ a foreign language school in Shanghai.
    joined attended
解析：解析试题分析：句意：去年我妹妹考上了上海外国语学校。Joined加入；founded创办，成立；attended出席，参加；arrived到达。所以选b。 考点：考查动词辨析。
11. Are these your pencils? ______ me at Cindy2013@hotmail.com.
    Call E-mail
解析：试题分析：Call打电话给……；E-mail给……发电子邮件。根据下文Cindy2013@hotmail.com可知此处指的是向这个邮箱发送电子邮件。故选B
12. Is the manager available tomorrow afternoon? —No, he is busy. Otherwise he ________ the meeting.
    had attended would attend
解析：试题分析：句意：—明天下午经理有空吗？—不，他很忙。否则为他就会参加会议。对现在和将来发生的事情的假设用would attend，故选B
13. Jose cupped his hands together to cover his mouth ______ other people would see him cry.
    so that for fear that.
解析： 试题分析：考查连接词。A以便为了；B生怕，唯恐。以防万一；句意：Jose紧紧用手捂着他的嘴，生怕别人看见他哭。故选B
14. Good news. We are going to have a __________ holiday. But I don’t think two weeks __________ enough.
    two weeks; is two-week; is
解析：试题分析：句意：好消息。我们将会有一个两周的假期。——但是沃恩为两周是不够的。修饰名词holiday作主语，应用定语two-week或者two weeks’.two weeks作主语，看成一个整体，故谓语用单数形式is。故选B
15. Achieving a high degree of proficiency in English as a foreign language is not a mysterious ________without scientific basis.
    process Practice
解析：试题解析：process过程；practice实习，练习，惯例。 故选A
16. The new government made a promise that they would surely improve the________of people’s life.
    outline quality
解析：试题分析：考查名词辨析。句意：新政府承诺将会提高人民的生活质量。A轮廓，要点，大纲；B质量，优点，品质，特点；这里指人民的生活质量，故选B
17. Now when people refer to England you find Wales______ as well.
    include included
解析：试题分析：考查过去分词。现在当人们谈到英国时，你会发现威尔士也被包括在内。find+宾语+过去分词，find和Wales之间是被动关系，所以用included 故选B
18. In order to _________ a good learning atmosphere, our teacher made strict rules for us at the beginning of this term.
    create invent
解析：试题分析：create创造 invent发明 句意为“为给我们营造一个好的学习环境。我们的老师在开学之初给我们制定了严格的规章制度。”，故选A
19. Many people are grateful _______ ORBIS nurse _______ their help.
    to, for toward, at
解析：试题解析：许多人感谢来自ORBIS护士的帮助。be grateful to 对...表示感谢
20. Who’s the boy in white T-shirt under the tree? —My friend.
    stand standing
解析：试题分析：句意：站在树下那个穿着白色T恤衫的男孩是谁？——我的朋友。Standing做后置定语，修饰boy。故选B