拖车的场内运输双行道宽度不得小于()
A.5.0m
B.6.0m
C.7.0m
D.8.0m
参考答案:B
The new-designed car is on show now. I wonder _____.
A.how much it cost
B.how much did it cost
C.how much it costs
D.how much does it cost
人口老龄化是指65岁及以上老年人口系数大于
A.7.0%
B.6.5%
C.6.0%
D.5.5%
E.5.0%