The competition vehicles______.A．all look the sameB．are used for plowing fieldsC．are trans

She was ______ the top prize in the competition.A．awardedB．rewardedC．receivedD．accepted

There is a demand in Congress for vehicles with higher fuel economy because ______.A．the c

The word "they" in line 9 refers to ______.A．childrenB．AmericansC．booksD．vehicles

The word "traffic" （Para. 3) probably means"______".A．all the vehicles moving along a road

Soon after the accident happened, the vehicles involved were ______ away.A．jerkedB．towedC．

The Segway is a vehicle______.A．that is expensive to useB．that is environment－friendlyC．de