题目内容
() 23. If you skate on thin ice,there is a(n) of falling into the water.
A. relation B. step
C. risk D. event
23.C
23.C
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题目内容
() 23. If you skate on thin ice,there is a(n) of falling into the water.
A. relation B. step
C. risk D. event
23.C