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问题 单项选择题

（）是由端头切缝的圆钢和铁楔组成，杆体插入锚孔后，冲击杆体，使铁楔胀开切缝，形成锚固力。

A、水泥砂浆锚杆

B、药包锚杆

C、自钻式锚杆

D、楔缝式锚杆

答案

参考答案：D

选择题

2000年春，西藏易贡藏布河沿岸发生大滑坡崩塌，致使易贡藏布河堵塞，其最大潜在威胁是               

A．滑坡体与河水一起形成泥石流

B．土坝堵塞河道．上游水位上涨，易诱发地震

C．土坝不牢，跨坝后洪水飞泻直下，危及下游地区

D．土坝堵塞河道，致使下游地区干旱缺水
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听力题

缺词填空，根据首字母填空. （每空一词 ） (10分）

I have three good f___小题1:___. Their names are David, Lucy and Sammi. David is a t___小题2:___ and s__小题3:__ boy. He likes sports. Look! He is playing basketball there. Lucy is from E___小题4:__. She looks very p__小题5:__. She is tall and s___小题6:__. She is our new c___小题7:__. Sammi is David’s cousin. She is twelve. A__小题8:____ of my friends are very p__小题9:_____ and helpful. I like t___小题10:___ very much.
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