First, fix a very sharp piece of metal, a foot or so above the frame. [ ] A.poin
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![First, fix a very sharp piece of metal, a foot or so above the frame. [ ] A.poin](/pic/43_754682.jpg)
First, fix a very sharp piece of metal, _______ a foot or so above the frame.
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A.pointedB.and pointedC.and pointingD.pointing
试题答案
答案:D
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