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为了能让各位考生能更加高效率的备考，为大家提供了2020年4月自考英语一选择题练习及答案详解，供大家参考。预祝大家顺利通过考试。
1.He was busily engaged ______ writing letters.
A. on
B. in
C. with
D. by
2.Do remember to ______ the light when you leave the room.
A. turn up
B. turn on
C. turn off
D. turn down
3.The atmosphere consists of an ocean of gases ______ miles high.
A. hundreds
B. hundreds of
C. of hundreds
D. of hundreds of
4.Not only the students but also the old teacher ______ been changed.
A. was
B. were
C. has
D. have
5.—— ________ I had!
—— You really suffered a lot.
A. What a time
B. What time
C. How a time
D. how time
6.The advertisements are trying ________ people to buy things they don’t really need.
A. persuade
B. persuading
C. be persuading
D. to persuade
7.Practice ________ English every day.
A. speak
B. to speak
C. speaks
D. speaking
8.The discount houses were first established in that period of time ________ people’s purchasing power was low.
A. which
B. that
C. when
D. where
9.Please write a report ________ the above subjects are to be covered.
A. which
B. in which
C. that
D. in that
10.The reason ________ I’m writing is to ask for your permission to translate your latest novel into Chinese.
A. because
B. why
C. for
D. as
答案详解
1.正确答案：B
答案解析：be engaged in：从事，忙于。
2.正确答案：C
答案解析：根据句意，应该选择“关闭”。句意：离开房间时一定记着把灯关掉。
3.正确答案：B
答案解析：译文：大气由上百英里高的气体组成。“hundred，thousand等数词的复数形式+of短语”表示的是不确切的数量。
4.正确答案：C
答案解析：not only…but also…是固定搭配，意思是：不但……而且……。它需要遵循就近原则，谓语动词应与the old teacher一致，所以答案是C.
5.正确答案：A
答案解析：感叹句分两类：
1.What + n.+主谓部分2.How + adj. / adv. / v.+主谓部分。本题属第一种，但省略了bad，相当于 What a bad time I had! 这是个习惯用语。
6.正确答案：D
答案解析：try to do：试图做某事。
7.正确答案：D
答案解析：本题考查的是practice后面要跟动词的ing形式。
8.正确答案：C
答案解析：先行词是in that period of time，所以关系词应选择when.
9.正确答案：B
答案解析：in which the above subjects are to be covered是report的定语从句。which指代先行词report，in用于与report搭配。
10.正确答案：B
答案解析：本题考查的是定语从句的用法。先行词是the reason;引导词why表示原因。
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