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【单选题】
表示老年人口在总人口中所占比例的指标是( )
A.
老年人口负担系数
B.
老年人口指数
C.
老龄化指数
D.
老年人口比例
E.
长寿水平
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A.
把工件表面的缺陷开口封住
B.
把油污封在缺陷中
C.
使缺陷发生扩展
D.
使工件表面产生缺陷
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【多选题】Question : Choose two sentences from below that can serve as the main idea of part five. [音频] Why changing online language doesn’t matter 18 Since society as a whole has about as much control over lan...
A.
Since society as a whole has about as much control over language as it does over earthquakes, this is a moot point at best.
B.
Culture has a way of evolving and that’s exactly what we’re experiencing with language .
C.
Education will need to change, too.
D.
‘Standard’ grammar is evolving, too, since digital shorthand and text-speak are now creeping into spoken language.
E.
It’s just that none of us know exactly what that will be yet.
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【判断题】Language Review: Idioms III . Each sentence contains one wrong word. Delete it and write the correct word. 15. To get it in a nutshell, we’re going to have to let you go. _________ 16. Let’s get strai...
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B.
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【单选题】Down ____ and hurt his leg.
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fell the boy
B.
fell he
C.
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【判断题】绵山因晋国介子推携母隐居被焚于此而著称,寒食节也源于此。
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【单选题】Down __________ and hurt his leg.
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fell the boy
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【单选题】The students, who described details of their sick friends_______, we’re soon flooded with 2,000 emails replies from doctors in 18countries.
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【单选题】对工件表面预处理一般不推荐采用喷丸处理是因为可能会（ ）
A.
把工件表面的缺陷开口封住
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【多选题】Question : Choose two sentences from below that can serve as the main idea of part five. [音频] Why changing online language doesn’t matter 18 Since society as a whole has about as much control over lan...
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