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【单选题】
在有两个发车口的车站往主要发车口发车时,为了防止出站信号机开放一个绿灯前有先闪一下两个绿灯的现象,电路中采用的安全措施是( )。A.
1个
B.
2个
C.
2至3个
D.
4个
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【简答题】听力原文：If it tastes good, it must be bad, so the saying goes. But delicious dark chocolate may be the exception to the rule. It may help lower blood pressure by an average of 10%. (83)
【单选题】一Do you like ice-creams? 一_____. [ ]
A.
Yes, very much
B.
Yes , I don't
C.
It tastes good
【单选题】—How would you like your coffee? —__________. [ ]
A.
Black, please.
B.
Very much
C.
It tastes good
D.
No, thanks
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