在学习英语的过程中，《新标准大学英语综合教程4（第二版）》是一本非常受欢迎的教材，它涵盖了丰富的语言知识和实用的技能训练。为了帮助大家更好地理解和掌握书中的知识点，我们特别整理了Unit Test1到Unit Test5的答案，并附上详细的解析，希望能对大家的学习有所帮助。
Unit Test1 答案及解析
选择题
1. 题目：The book is ________ interesting that I can't put it down.
A. so B. such C. very D. too
正确答案：A
解析：此题考察固定搭配“so...that”，表示“如此...以至于”。句意为这本书如此有趣，我无法放下。
2. 题目：He has been working hard ________ he can pass the exam.
A. because B. so that C. although D. if
正确答案：B
解析：“so that”引导目的状语从句，表示“以便；为了”。
完形填空
3. 题目：The teacher told us to write an essay about our summer vacation, but I found it quite difficult ________ my experiences into words.
A. putting B. to put C. put D. puts
正确答案：B
解析：此题考察固定结构“find it + adj.+ to do sth.”，其中it作形式宾语，真正的宾语是后面的不定式短语。
Unit Test2 答案及解析
阅读理解
4. 题目：According to the passage, what is the main cause of global warming?
A. Deforestation B. Overpopulation C. Industrial pollution D. Natural disasters
正确答案：C
解析：文章中明确提到工业污染是全球变暖的主要原因，因此选项C正确。
5. 题目：Which of the following best describes the author's attitude towards renewable energy sources?
A. Indifferent B. Optimistic C. Pessimistic D. Neutral
正确答案：B
解析：作者在文中多次提到可再生能源的重要性以及其积极的发展前景，表明持乐观态度。
Unit Test3 答案及解析
语法填空
6. 题目：She said she would call me as soon as she ________ (arrive) home.
正确答案：arrived
解析：as soon as引导的时间状语从句遵循主将从现的原则，此处使用一般过去时符合语法规则。
7. 题目：It is believed that this medicine will help you recover ________ (quick).
正确答案：quickly
解析：副词修饰动词，此处“quickly”用来修饰动词“recover”。
Unit Test4 答案及解析
改错题
8. 题目：The reason why he didn't come was because he was ill.
正确答案：去掉“because”或改为“the reason why he didn't come was that he was ill”.
解析：“reason”与“why”搭配，“because”多余；或者使用“that”来连接表语从句。
9. 题目：Not only does he speak English fluently, but also he writes well.
正确答案：No change needed.
解析：此句符合“not only...but also”结构，且语序正确。
Unit Test5 答案及解析
翻译题
10. 题目：我们需要采取措施减少空气污染。
正确答案：We need to take measures to reduce air pollution.
解析：此句考察常用表达“take measures to do sth.”，意为“采取措施做某事”。
以上是对《新标准大学英语综合教程4（第二版）》Unit Test1至Unit Test5的答案及详细解析。希望这些内容能够帮助大家巩固所学知识，提高英语水平。如果还有其他问题或需要进一步的帮助，请随时联系我们。
