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【单选题】
遗尿和梦游一般发生在睡眠周期的哪个阶段A.
慢波睡眠的第一阶段
B.
慢波睡眠的第二阶段
C.
慢波睡眠第三阶段
D.
慢波睡眠的第四阶段
E.
快波睡眠阶段
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反馈参考答案：
举一反三
【单选题】Much of the criticism has focused on the railway’s online purchasing system，which has been unable to _________ the huge demand．
A.
take notice of
B.
attach importance to
C.
show preference for
D.
keep pace with
【单选题】In________of speed,safety and price, the hi-railway system is perhaps the world ’smodel railway.
A.
terms
B.
case
C.
need
D.
search
【简答题】railway ticket system
【单选题】The following statements about urban rail signal system and national railway signal system are correct,exept( )
A.
Nan Jing line 1 is urban rail.
B.
Urbal rail sevice objiect only passengers.
C.
Nation railway control distance is tens of kilometers.
D.
Urban railway depot has shunting function.
【单选题】The railway system was ______ on the successful plan used in other countries.
A.
copied
B.
imitated
C.
modeled
D.
molded
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