已知三个质数a、b、c满足a+b+c+abc=99,那么|a-b|+|b-c|+|c-a|的值等于()。
A. 16
B. 24
C. 25
D. 34
E. 32
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已知甲走5步的时问,乙只能走4步,但是甲走5步的距离,乙只要走3步就够了.让甲先走20步,乙再追他,乙要追上甲需要走()步。
A. 24
B. 36
C. 42
D. 48
E. 60
Do you often look out of the windows while you ______ lessons
A. have
B. had
C. are having
D. has
He was () when he heard the unexpected news, but I finally convinced him.
A. incredible
B. inevitable
C. incredulous
D. indifferent
I can()you to the market in my car.
A. send
B. pick
C. ride
D. take