题目

 Father’s opposition couldn’t stop him; on the contrary, it only _______ his determination to go ahead. A. enforced                                                     B. confirmed C. strengthened                                                D. claimed 答案:【解析】选C。考查动词辨析。句意为:父亲的反对没能阻止他,相反那更加强了他继续进行下去的决心。strengthen“加强,使更坚固”;enforce“强迫,使服从”;confirm“证实”;claim“声称,断言”。在蝌蚪发育成蛙的过程中,对尾部消失起主要作用的细胞器是 A.溶酶体        B.中心体    C.线粒体        D.高尔基体
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