用适当形式填空：Nobody can _____ anything of real significance unless he works very hard. (achievement)
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They put a weather satellite into ____ round the earth. (orbit)
用适当形式填空：The marketplace was where _____ was traditionally carried on. (commercial)
用适当形式填空：I meant to help him; _____ I have brought him trouble. (expect)
汉朝对官员实施业绩考核的法律称为：
A. 《上计律》
B. 《附益律》
C. 《尚方律》
D. 《耐金律》
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