急流滩是山区河流最典型的河段形式，一般出现在（）等突出物附近

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问题单项选择题

急流滩是山区河流最典型的河段形式，一般出现在（）等突出物附近。①山脚②碛坝③岸嘴④河心障碍物⑤河床凸起物

A.①②③

B.①②③④

C.①②③④⑤

D.①③⑤

答案

参考答案：C

选择题

“檀渊之盟”是__________和_____________的和议？ [ ]

A、宋、金

B、宋、西夏

C、宋、辽

D、西夏、辽

选择题

The family _____ at the lunch table when someone came to tell them what had happened

at _____. [ ]

A. were sitting; Mr Brown

B. were sitting; Mr Brown's

C. was sitting; Mr Brown

D. was sitting; Mr Brown's