【简答题】u2 完形填空,答案填单词前大写的字母,不要填单词。 A. speculate B. prospect C. insight D.boost E.contest F. affected G. appreciation H. education I. spectacular J.mystery K. recovery L....
【单选题】The high unemployment rate in the U.S. is an example of a(n) ________ force affecting business.
【简答题】A.脾 B.肾 C.肝 D.肺 E.心 主藏血的是( )
【单选题】链霉素的结构是由下列哪些物质结合而成的碱性苷