They waited at the bus stop and about five minutes later the bus they wanted     along.

A．coming

B．came

C．to come

D．had come

开发建设项目人为水土流失防治拦挡措施包括的选项为（）。

A.植物护坡

B.拦渣墙

C.拦渣坝

D.削坡开级

E.拦渣堤