We have 6 new ____________.[ ]
A. light
B. lights
C. desk
答案:B
Students should pay attention to __________ the teacher in class.
A.hear
B.listen to
C.listening to
D.hearing
蓄电池大修后同车蓄电池的容量差:酸性蓄电池不得超过(),碱性蓄电池不得超 过()。
A.5%,10%
B.5%,8%
C.10%,8%
D.8%.5%