问题
选择题
The man makes a mark on the boat ____________ a knife.[ ]
A. with
B. use
C. and
答案
答案：A
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The man makes a mark on the boat ____________ a knife.[ ]
A. with
B. use
C. and
答案：A
I，关于
I属于碘元素的两种不同核素，互称同素异形体