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【多选题】
24 外植体细胞在适宜的培养条件下发生()过程。A.
脱分化
B.
再分化
C.
生芽
D.
产生根，或者形成胚状体
E.
发育成完整植株
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举一反三
【简答题】第13段中“我感到一种从未有过的解脱与轻松，心中更有了一股勇气”的原因是
【单选题】某风湿性心脏病病人,卧床4个月余,每天需作下肢被动活动和按摩,其目的是( )
A.
促进末梢循环减少回心血量
B.
防止肢体肌肉萎缩
C.
防止下肢静脉血栓形成
D.
使病人舒适促进睡眠
【单选题】听力原文： I know a man called John Smith who is a very unusual millionaire. What makes him unusual is that he has no money and no worries that money cannot take care of. But John Smith has thought about t...
A.
He is a poor man.
B.
He is a millionaire.
C.
He is a liar.
D.
He is a fortune teller.
【单选题】对第13段的分析最准确的一项是
A.
用南国之秋衬托北国之秋，暗写南国之秋的美景，抒发对家乡的眷恋之情
B.
用对比方法，对南国之秋明贬暗褒，说明南国之秋与北国之秋各有特色
C.
在欲扬先抑中对比南国之秋和北国之秋，表现作者对北国之秋的偏爱和赞美
D.
用对比、比喻，强调北国之秋色味浓厚，抒发作者对故都之秋的无比眷恋之情
【单选题】听力原文：W: I'm sorry I have caused your uncle so much trouble. M: Don't worry about it. He is the sort of man who is never happy unless he has something to complain about. Q: What can we learn about the ...
A.
He is a short man.
B.
He often complains.
C.
He is a happy sort of person.
D.
He is worried about something.
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