1 . 这个报告在清晰性和连贯性方面存在不足，让听众对主要观点感到困惑。
The presentation________________ clarity and coherence, leaving the audience confused about the main idea.
The presentation
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2 . 这位教授非常重视批判性思维的能力。
The professor________________ the ability to think critically.
The professor
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3 . 门咔嚓一声锁上时，他突然想到自己把钥匙忘在了里面。
________________ he had left his keys inside just as the door clicked shut.
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4 . Only by making ourselves fully __________ hope to achieve our goals.
| A．prepared can we | B．prepared we can | C．prepare can we | D．prepare we can |
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5 . The city is known for its cleanliness. Rubbish, __________, is hardly seen on the streets.
| A．if not | B．if ever | C．if any | D．if so |
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6 . Mankind must have in mind that it will be years, even centuries, ______ the environment recovers from the damage he makes to it.
| A．that | B．before | C．when | D．since |
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7 . Bach died in 1750, but it was not until the early 19th century ______ his musical gift was fully recognized.
| A．when | B．in which | C．that | D．which |
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8 . The limits of a person’s intelligence are fixed at birth, but ______ he reaches these limits depends on his environment.
| A．if | B．that | C．whether | D．what |
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9 . ______ gets home first is to cook supper for our big family.
| A．Who | B．Whoever | C．Whom | D．Those who |
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10 . I felt concerned when __________ (watch) the documentary. (所给词的适当形式填空)
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