题目

 The newly-discovered star was named______ a Chinese astronomer______ his contributions     to Astronomy.    A. after; in favor of   B. for; in memory of     C. after; in honor of    D. as; in praise of 答案:C20.图示操作步骤的正确顺序是(  )A.④③①②B.③④①②C.③①④②D.③④②①
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