【单选题】【消耗次数：1】
4.Scientists didn’t know much about lung cancer ______.
①
before long
②
until recently
③
long before
④
in the past few years
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相关题目
【单选题】
This technology has been ?around for a long time, but not until recent years _______ it in marketing.
①
businesses employed
②
did businesses employ
③
businesses had employed?
④
had businesses employed
【单选题】
It was quite a few years before Mark Twain finally finished his last novel.
①
A．在马克·吐温完成最后一部小说之前，已经是好几年了。
②
B．在马克·吐温完成最后一部小说之前，又是好几年了。
③
C．过了好几年，马克·吐温才终于完成最后一部小说。
④
D．马克·吐温完成了最后一部小说时，又过了好几年。
【单选题】
The prices of the agricultural products have been ____ steadily in the past few years.
①
risen
②
raised
③
arisen
④
aroused
【单选题】
A： How long have you been here?B： Not for long, only about five minutes. Alice and Monica ______ here with me.
①
have walked
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had walked
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were walking
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walked
【单选题】
Before?he came to China, he??[填空]Chinese for three years.
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have learned
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had learned
③
learned
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【单选题】
-We’ve worked for a long time, what about stopping to have a rest? -_____________________.
①
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②
A. You are wonderful.
③
A. That’s a good idea.
④
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【单选题】
-Weve worked for a long time, what about stopping a while to have a rest?-_____________________.
①
I like it.
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You are wonderful.
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Thats a good idea.
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ok
随机题目
【单选题】
下列对《登岳阳楼》的分析，错误的一项是（ ）。
①
《登岳阳楼》是杜甫青年时期的作品。
②
《登岳阳楼》中，“昔、今”二字有深刻的含意。
③
《登岳阳楼》颔联形象逼真地描画了洞庭湖水势浩瀚无边无际的巨大形象。
④
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