The students were told to _____ their English before going abroad. A. give up B. polish up C. use up D. end up — How would you like your tea? — _____. A. Very quickly B. As it comes, please C. Very much D. I don’t like tea 答案:B14.某二倍体动物的某细胞内有10条染色体、10个DNA分子,且细胞膜开始向内凹陷,则该细胞( )A.正在发生基因的自由组合B.不可能发生基因的自由组合C.不可能发生等位基因的分离D.正在发生非姐妹染色单体间的交叉互换