【单选题】【消耗次数：1】
5.Nowchildren,turntopage______andlookatthe________pictureinLessonTwo.
①
twentieth; one ?
②
twenty; one
③
twentieth; first
④
twenty; first
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He’s never again written ____ as his first one.
①
so good a book
②
such good a book
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such good book
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so a good book
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The twentieth century is the age of _____________.
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technic
②
technician
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technology
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technological
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I have made _______ dumplings. Now Im making the _______ one.
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twenty; twentieth-first
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twenty; twenty-first
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twentieth; twenty-first
④
twenty; twenty-one
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Twenty people were _______ wounded in the air crash.
①
quickly
②
wrongly
③
bitterly
④
seriously
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Twenty-year-olds should not _____ to drive in China.
①
allow
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be allow
③
be allowed
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allowed
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?There are altogether fifty students in our class, twenty____ are boys. ?
①
of them ?
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of those ?
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of whom ?
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of whose ?
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Although she wrote a lot of short stories and poems when she was very young, _____she was twenty five.
①
her first real success did not come until
②
her real first success came until not
③
since her first real success did not come until
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not until her first real success
【单选题】
Although she wrote a lot of short stories and poems when she was very young, ____ she was twenty five.
①
her first real success did not come until
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her real first success came until not
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not until her first real success
随机题目
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反应釜的作用不包括（ ）。
①
使气体在液相中作均匀分散
②
通过对参加反应的介质的充分搅拌，使物料混合均匀
③
减弱传热效果和相间传热
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使不相容的另一相液相均匀悬浮或充分乳化选项
【单选题】
对于填料塔的附属结构，以下说法不正确的是（ ）。
①
支承板的自由截面积必须大于填料层的自由截面积
②
液泛不可能首先发生于支承板
③
液体再分布器可改善壁流效应造成的液体不均匀分布
④
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