【单选题】【消耗次数：1】
_____muchisknownaboutwhatoccursduringsleep,theprecisefunctionofsleepanditsdifferentstagesremainlargelyintherealmofassumption.
①
Because
②
Since
③
For
④
While
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【单选题】
_____muchisknownaboutwhatoccursduringsleep,theprecisefunctionofsleepanditsdifferentstagesremainlargelyintherealmofassumption.
①
Because
②
Since
③
For
④
While
【单选题】
Kingsley took a lot of ______________ with her while traveling because she was doing scientific research on fish.
①
furniture
②
equipment
③
information
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education
【单选题】
Agreatnumberofcollegesandfactories____since1949.
①
hasbeenestablish
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havebeenestablished
③
haveestablished
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hadbeenestablished
【单选题】
C语言中while与do-while语句的主要区别是（ ）。
①
do-while的循环体至少无条件执行一次
②
do-while允许从外部跳到循环体
③
while的循环体至少无条件执行一
④
while的循环控制条件比do-while的严格
【单选题】
C语言中while 和do-while 循环的主要区别是( )。
①
do-while 的循环体不能是复合语句
②
while 的循环控制条件比do-while 的循环控制条件严格
③
do-while 允许从外部转到循环体内
④
do-while的循环体至少无条件执行一次
【单选题】
C语言中while和do-while循环的主要区别是（ ）？
①
do-while的循环体至少无条件执行一次
②
while的循环控制条件比do-while的循环控制条件严格
③
do-while允许从外部跳转到循环体内
④
do-while的循环体不能是复合语句
【单选题】
Since the road is wet this morning, ____ last night. ?
①
it must have rained ?
②
?it must rain ?
③
it must be raining ?
④
it must have been rained?
【单选题】
A lot of students ____ the campus since July 1.
①
have left
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leave
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left
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is leaving
【单选题】
Since the matter was extremely _____, we dealt with it immediately.
①
tough
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tense
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urgent
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instant
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