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【简答题】
估算下面各题的结果. 39÷8≈______ 37÷6≈______ 238÷6≈______ 418÷5≈______
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举一反三
【单选题】The missing boy were last seen _________ near the bank.
A.
playing
B.
to be playing
C.
play
D.
to play
【单选题】The missing boy were last seen _______near the river.
A.
playing
B.
be playing
C.
play
D.
to play
【单选题】GTO是一种全控型器件,其全称是什么?
A.
大功率晶体管
B.
门极可关断晶闸管
C.
功率场效应管
D.
绝缘栅双极晶体管
【单选题】IGBT是一种全控型器件,其全称是什么?
A.
大功率晶体管
B.
门极可关断晶闸管
C.
功率场效应管
D.
绝缘栅双极晶体管
【单选题】At the moment, the police ______trying their best to search for the missing boy.
A.
are
B.
is
C.
were
D.
was
【判断题】门极可关断晶闸管是一种全控型器件
A.
正确
B.
错误
【判断题】门极可关断晶闸管是一种全控型器件。
A.
正确
B.
错误
【单选题】The whole class_____searching for the missing boy when the heavy rain poured down
A.
was
B.
were
C.
had been
D.
would be
【简答题】The boy was missing. His parents were very concerned about his safety.
【单选题】It’s reported that many policemen were sent to the forest ____________ the missing boy.
A.
in need of
B.
in favor of
C.
in honor of
D.
in search of
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