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【单选题】
一个由线性电阻构成的电器,从 220V 的电源吸取 1000W 的功率,若将此电器接到 110V 的电源上,则吸取的功率为( )A.
250W
B.
2000W
C.
1000W
D.
500W
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举一反三
【简答题】无关项代表哪两种情况?
【单选题】According to the third paragraph, which is true about water?
A.
There is no such thing as water shortage in the world at all.
B.
It can be recycled in the form. of rain, snow or evaporation.
C.
Less than a tenth of water is extracted for human use each year.
D.
Only what falls as rain and snow can be made full use of.
【单选题】Mike resembles his mother in appearance _____ his personality follows his father's.
A.
who
B.
which
C.
while
D.
where
【单选题】听力原文： What happened to me that day is just unbelievable. The first thing to go wrong was that all the parking spaces were taken. So I had to park on the grass, and hoped that I would not get a parking...
A.
A student.
B.
A teacher.
C.
An officer clerk.
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