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问题 单项选择题

处理裂缝及溶洞性漏失不能采取的措施是（）。

A、边漏边钻堵漏

B、用植物纤维或矿物纤维堵漏

C、用核桃壳、花生壳等颗粒性材料堵漏

D、提高钻井液密度

答案

参考答案：D

选择题

During the football match, he hurt his arm as well as       his leg.   [ ]

A. break      

B. breaks      

C. breaking      

D. broke

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选择题

________, as long as I’m with nature, I don’t care.

A．However tough the journey is

B．Whatever tough the journey is

C．However the journey is tough

D．Whatever the journey is tough
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