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【单选题】
下列化合物12-戊烯 22-甲基-2-戊烯3 2-氯-2-戊烯4 3-氯-2-戊烯 52,3-二氯-2-戊烯 62,3-二甲基-2-戊烯,没有顺反异构体的是
A.
②⑤⑥
B.
①
C.
②⑥
D.
⑤⑥
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举一反三
【单选题】Which of the following statements about the earlier card is true?
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Its owner can change the ID code freely
B.
Its user does not need to key in the ID number．
C.
It can record its user’s spoken password．
D.
It still can be used by someone else after being stolen．
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【单选题】Which of the following is true according to Paragraph 4?
A.
Illegal immigrants have more chances to stay permanently in the U.S. than guest workers.
B.
With stepped-up border control, illegal immigrants are more likely to stay in their homeland.
C.
Workers in temporary-worker programs usually pay no attention to their visa duration.
D.
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B.
资料里没说，不知道该怎么填
C.
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D.
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B.
1000元
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【单选题】Which of the following is not ballroom dance
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B.
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C.
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【简答题】Many of the which are advertised as liberating the modern woman tend to have the opposite effect, because they simply change the nature of work instead of eliminating it. Machines have a certain ...
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【单选题】which of the following is not ballroom dance? ( )
A.
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B.
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C.
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【简答题】Most of these customers are intellectuals. People like to work in ABC Company not just because it is a very famous international company but because there are many 1.__________ for people to work ther...
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【单选题】You should ask ______ your parent's opinions about this matter.
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after
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to
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【单选题】Which of the following statements about the earlier card is true?
A.
Its owner can change the ID code freely
B.
Its user does not need to key in the ID number．
C.
It can record its user’s spoken password．
D.
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【单选题】Which of the following is true according to Paragraph 4?
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【简答题】Most of these customers are intellectuals. People like to work in ABC Company not just because it is a very famous international company but because there are many 1.__________ for people to work ther...
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【单选题】You should ask ______ your parent's opinions about this matter.
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