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【判断题】
只要具有正反馈，就能产生自激振荡。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】阅读理解。 A hobby is not a job or a school subject. A hobby is something you enjoy doing in your spare time. It's not something you need to do. It's just fun. Some people make model ships, keep pets, p...
【简答题】A hobby is not a job or a school subject. A hobby is something you enjoy doing in your spare time. It’s not something you need to do. It’s just fun. Some people make model ships, keep pets, plant flow...
【简答题】The poor girl went on for another ten miles on an stomach.
【单选题】Look! __________.
A.
Out the girl went
B.
Went the girl out
C.
Away went the girl
D.
Away the girl went
【单选题】中国现代快递服务的发展历程是
A.
20世纪60年代末至70年代初：萌芽阶段
B.
20世纪70年代末至90年代初：起步阶段
C.
20世纪90年代末至21年代初：成长阶段
D.
21世纪初至今：快递发展阶段
【简答题】阅读理解 A hobby is not a job or a school subject. A hobby is something you enjoy doing in your spare time. It's not something you need to do. It's just fun. Some people make model ships, keep pets, plant...
【单选题】The poor girl went on for another ten miles on an _________ stomach.
A.
empty
B.
bare
C.
vain
D.
hollow
【单选题】不是中国现代快递服务的发展历程是（）
A.
20世纪60年代末至70年代初：萌发阶段
B.
20世纪70年代末至90年代初：起步阶段
C.
20世纪90年代初至21世纪初：成长阶段
D.
21世纪初至今：快速发展阶段
【简答题】For what did Peter thank Mr. smith at the end of the letter? For ______.
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