接近被连挂的车辆时,其速度不得超过()公里/小时。
A.7
B.3
C.5
D.10
参考答案:B
— Have you seen Bill?
— No, he to the library. [ ]
A. has gone
B. had gone
C. has been
D. goes
丹顶鹤保护区有国家重点保护的一类和二类动物分别为()。
A、12种.67种
B、9种.33种
C、17种.29种
D、45种.67种