问题
选择题
170. So long as you work hard enough, a(an) _____ rod can be ground into a needle. (prov.)
A．steel
B．stick
C．gold
D．Iron
答案
D
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170. So long as you work hard enough, a(an) _____ rod can be ground into a needle. (prov.)
A．steel
B．stick
C．gold
D．Iron
D