1. While I was in the university, I learned taking a photo, ____ is very useful now for me.
it which that what
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标准答案： which
2. This ten-dollar hat is now ____ for five dollars.
at sale on sale in sale with sale
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标准答案： on sale
3. A man is being questioned in relation to the ________ murder last night
advised attended attempted admitted
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标准答案： attempted
4. The student ___much brighter than he had first appeared.
provided improved proved used
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标准答案： proved
5. Experiments in the photography of moving objects ____in both the United States and Europe well before 1900.
were conducted were conducteing had been conducted is conducted
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标准答案： had been conducted
6. 1. Scientists say that many factors ________ changes in the weather.
bring out bring about take into take about
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标准答案： bring about
7. She ______ her mother’s work since she was admitted into hospital.
has been doing is doing has done did
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标准答案： has been doing
8. Two days is not enough for him to finish the work．He needs _______ day.
other the other the third a third
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标准答案： a third
9. There is overwhelming scientific evidence, ____ shown in the Fourth Assessment Report (第四次评估报告的综合报告)of the Intergovernmental Panel on Climate Change (IPCC) 政府间气候变化专门委员会(IPCC),
because as while when
本题分值： 4.0 用户未作答 标准答案： as
10. Never before _______ see such a terrible car accident on the road!
I have have I I did did I
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标准答案： did I
11. Mrs. Brown, who has recently been ___general manager of our company, is one of the most capable women I have ever worked with.
named appointed assigned allocated
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标准答案： appointed
12. Strange things happen to time when you travel, because the earth is divided into twenty-four parts, ______ a part.
four hours two hours half an hour one hour
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标准答案： one hour
13. How can he _____ if he is not _____?
listen,hearing hear, listening be listening, heard be hearing, listened to
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标准答案： hear, listening
14. The next time I buy a TV set, I’m going to buy one with a larger _______.
front screen part menu
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标准答案： screen
15. _______late in the morning, Bob turned off the alarm.
To sleep Sleeping Sleep Having slept
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标准答案： To sleep