There are two key factors behind this (trend).
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From a (practical) point of view, it isn't a good place to live.
A. 老旧的
B. 传统的
C. 信任的
D. 实际的
(Overall), this is a very useful book.
A. 相对的
B. 大概率
C. 总体上
D. 无趣的
He was enjoying his new-found ( ).
A. sleep
B. freedom
C. engry
D. tired
理想运放两个输入端电流均等于零,相当于输入端断开,称为( )。
A. 虚短
B. 虚断
C. 断路