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【判断题】
在 UV 中的 K 吸收带是由 n →π * 跃迁引起,其特点是吸收较强。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】If you want to do well on the exam, you______ on the directions that the professor gives and take exact notes.
A.
will have concentrated
B.
have to concentrate
C.
will be concentrated
D.
will be concentrating
【简答题】175保留三位有效数字为_______
【简答题】You each have a chance to talk by yourselves. The examiner gives you a colour photograph to look at and asks you to talk about it. When you have finished talking, the examiner gives your partner a dif...
【简答题】The examiner asks you to talk about something together and gives you a drawing to help you.
【简答题】A．It gives you only a small income. B．It offers good wages but no interest. C．It gives you a lot of responsibility but not much money. D．It is unrewarding in every way.
【单选题】Only when you have completed the basic English course ______ be permitted to take the advanced courses.
A.
you can
B.
can you
C.
you will
D.
that you
【单选题】Physical exercise is socially beneficial because ______.
A.
it gives people competitive advantage
B.
it helps people reduce anxiety
C.
it enables employees to work better for their company
D.
it makes people confident in dealing with others
【简答题】If someone gives you a gift, you should______(wrap) the box to appreciate the gift.
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