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【单选题】
I think that it must be handled delicately .A.
skillfully
B.
carefully
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举一反三
【单选题】对三极管放大作用的实质,下列说法正确的是。
A.
三极管可以用较小的电流控制较大的电流
B.
三极管可以把小电流放大成大电流；
C.
三极管可以把小电压放大成大电压；
D.
三极管可以把小能量放大成大能量。
【单选题】选修课中视频的平均时长和课时分别是()
A.
3-5min ， 5 课时
B.
3-10min ， 7 课时
C.
5-15min ， 10 课时
D.
10-20min ， 15 课时
【单选题】-Do you like the city life or the country life? -It's hard to say. In the city there are ________ interesting things, but in the country there is ________ pollution. [ ]
A.
less; more
B.
more; less
C.
more; fewer
D.
much; much
【单选题】-Do you like city life or the country life? -It's hard to say. In the city there is _____________ interesting things , but in the country there's ____________ pollution. [ ]
A.
less；more
B.
more；less
C.
more；fewer
D.
much；much
【简答题】Dear Sirs, 1 reference 2 your letter 3 December 5, 2006, we are pleased to learn that you wish to enter 4 business relations 5 us 6 the line of textiles. 7 compliance 8 your request, we are sending yo...
【简答题】现代汉语包括__________和民族共同语。
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