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【单选题】
______ is surprising to us is that Tom, for ______ English was once boring, can speak English fluently as though he were a native speaker.A.
What; whom
B.
What; whose
C.
It; whose
D.
As; whom
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举一反三
【判断题】It is improper to ask a caller to identify himself before answering his questions.
A.
正确
B.
错误
【单选题】It is improper to _____ between pupils according to their family background.
A.
different
B.
differentiate
【单选题】When making an inquiry, it is improper to include in your letter____.
A.
the way of payment for the goods
B.
the bargaining over the prices
C.
the product name
D.
the packing of the goods
【判断题】It is improper to ask the interviewer what the time frame is for deciding who will progress to the next stage.
A.
正确
B.
错误
【单选题】对于采用万用表区分红外晶体管描述不正确的是：
A.
无红外光照情况下，红外三极管正反向电阻为∞
B.
无红外光照情况下，红外二极管正向小电阻，反向电阻∞
C.
有红外光照情况下，红外三极管正反向都为小电阻
D.
有红外光照情况下，红外发射二极管正向小电阻，反向∞
【简答题】It is improper to ___ (different) between pupils according to their family background.
【单选题】It is improper to _______ others while they are talking.
A.
interview
B.
interrupt
C.
influence
D.
interact
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