The Substance can be added to gasoline to accelerate（B级）the speed of automobiles．
A. quicken
B. shorten
C. 1ooen
D. enlarg
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The first time the author played the violin in the street．he expected
A. he would became a great musician．
B. he would get into trouble．
C. people would be happy t0 give him money．
D. people would stop and listen．
So1diers have to obey（A级）orders．
A. reply to
B. apply for
C. abide with
D. eoillply with
In what aspects are the new HOV and Alvin different？
A. 0ffering better views．
B. Speed．
C. Size．
D. Both A and B．
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