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【单选题】
CH 3 -CH 2 -CH=CH-CH 2 Br在下列反应中①取代反应 ②加成反应 ③消去反应 ④使溴水褪色 ⑤使酸性KMnO 4 溶液褪色 ⑥与AgNO 3 溶液反应生成浅黄色沉淀 ⑦聚合反应该有机物能发生的反应有 [ ]A.
以上反应均可发生
B.
只有⑦不能发生
C.
只有⑥不能发生
D.
只有②不能发生
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举一反三
【单选题】He said he had stolen the money but he couldn’t ______ the fact that the money was found in his h
A.
5. He said he had stolen the money but he couldn’t ______ the fact that the money was found in his house. A．answer for
B.
leave for
C.
account for
D.
care for
【单选题】“Was his father very strict with him when he was at school?” “Yes. He had never praised him _____
A.
5. “Was his father very strict with him when he was at school?” “Yes. He had never praised him _______ he became one of the top students in his grade.” A．after
B.
unless
C.
until
D.
when
【单选题】He did't do it, did he? ______.
A.
No, he doesn't
B.
Yes, he didn't
C.
No, he did
D.
Yes, he did
【单选题】He hasn’t slept at all for three days. he is tired out.A．There is no pointB．There is no needC．It
A.
5. He hasn’t slept at all for three days. he is tired out. A．There is no point
B.
There is no need
C.
It is no wonder
D.
It is no way
【简答题】Look and write. 1. A: How does he feel? B: He . 2. A: How ? B: He . 3. A: ? B: . 4. A: ? B: . 5. A: ? B: .
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