【判断题】【消耗次数：1】
煤种、煤的化学性质是决定其用途、加工方法和工艺的重要依据。
①
正确
②
错误
参考答案：
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【单选题】
下列关于烯烃的化学性质的叙述不正确的是（ ）。
①
烯烃能使溴的CCl4溶液褪色，是因为烯烃与溴发生了取代反应
②
在一定条件下，丙烯能够发生加聚反应生成聚丙烯
③
烯烃能使酸性KMnO4溶液褪色，是因为烯烃能被KMnO4氧化
④
在一定条件下，烯烃能与H2、H2O、HX(卤化氢)发生加成反应
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____ the front door ____, he had to enter the room through the back door.
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Seen; painted
②
Seeing; painted
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Being seen; being painted
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Seeing; being painted
【单选题】
When he was a boy, he used to go there and watch ____.
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to repair bicycles
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bicycles to be repaired
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bicycles being repaired
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repairing bicycles
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—Have you considered ____ your job as a teacher? —Yes. I like the job because a teacher is often considered a gardener.
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?to change; to be
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?to change; being
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?changing; being
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?changing; to be
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Every one of you is looking forward ___ getting a good result. Better think carefully before writing down your answers. Wish you success!
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?on
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? in
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?to
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? of
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— I hear ___ your grandpa ___ your grandma like watching Min Opera. — Right, just as many old people do in Fuzhou.
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?both; and
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?either; or
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neither; nor
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?not only; but also
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Many teenagers have hobbies. But sometimes these hobbies can get ___ of schoolwork.
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?on the way
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?in the way
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? by the way
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?out of the way
【单选题】
I ___ go to bed until I ___ finished my work last night.
①
don’t; had
②
didn’t; have
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didn’t; had
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don’t; have
【单选题】
—Look, someone is coming. Guess who it ___ be?—I think it ___ be Tom.—I don’t think it ___ be ___.
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?must; can; must; his
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?may; can; must; him
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?can; must; can; him
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?should have sent
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?should be sending
④
?should send