我国的地势特点对河流产生的有利影响有[ ]
A．蕴藏着丰富的水能
B．水流平缓，利于通航
C．大江南流，利于南北交通
D．河流流量大，含沙量小
答案：A
"Why don’t you stay here over the weekend? " She said.
_______
A．She said why didn’t you stay there over the weekend.
B．She said why you don’t stay there over the weekend.
C．She asked me not to stay there over the weekend.
D．She suggested I should stay here over the weekend.
我国的审核员注册机构是（）
A.国家质检总局
B.国家认监委
C.中国认证认可协会
D.国家认可委
