问题
选择题
You'd better________your leg in case it bleeds. [ ]
A. hold up
B. get up
C. take up
D.pick up
答案
答案：A
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You'd better________your leg in case it bleeds. [ ]
A. hold up
B. get up
C. take up
D.pick up
答案：A
面洞时，洞底应（）