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问答题

减数分裂过程，染色体复制一次，细胞核分裂____________次，分裂结果形成四个子细胞，每个子细胞的染色体数目为母细胞染色体数目的一半

单项选择题

I’d rather have a room of my own, however small it is, than____a room with someone else. A.
to share B.
to have shared C.
share D.
sharing