【单选题】【消耗次数：1】
The experiment_________ in the lab now.
①
was done
②
is being done
③
has been done
④
is doing
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相关题目
【单选题】
They have done things they ought_____.
①
not to do
②
not to be done
③
not to have done
④
not having done
【单选题】
A: Could you put the books on bookshelves, please? B: Of course. [填空] A: Thats all. Everything else has been done.
①
Its a pleasure to help.
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Is that all?
③
Im free now.
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How should I do it?
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Now soil in this area is [填空] than it used to be. Something must be done to it.
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very good
②
much better
③
rather than
④
even worse
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Of course she ___________ what youve done.
①
is pround of
②
finds a way
③
takes off
④
fights for
【单选题】
Well done. Congratulations on your success.
①
Thank you very much
②
Oh, no, no
③
No, I didn’t do very well
④
Sorry, I couldn’t any better
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That’s all prepared. It _______done more.
①
shouldn’t
②
mustn’t be
③
dont need to be
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Can anything be done to_________ the negative influence of some television programs?
①
accept
②
assume
③
avoid
④
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随机题目
【单选题】
影响伸缩性的因素不包括（ ）
①
购买商品的货币支付能力
②
消费者需要的需求程度，需求程度越高、需求层次越高，需要的伸缩性越小
③
消费者需要的需求程度，需求程度越高、需求层次越低，需要的伸缩性越小
④
外因影响主要是商品供应、价格、广告宣传、销售服务和他人的实践经验等
【单选题】
20世纪70年代，麦克高尔提出了一系列比马斯洛需求层次理论更为详细的动机分类理论。克服马斯洛学说中的一些不足，被广泛运用于市场营销活动。他把需要与动机分为13类。该说法（ ）
①
正确
②
错误