皮皮学，免费搜题
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【单选题】
以下关于精子形成的描述中,哪一项错误?A.
细胞核染色质极度浓缩，核变长并移向细胞一侧形成精子头
B.
复合体形成顶体
C.
中心粒发出轴丝，形成精子尾（即鞭毛）
D.
线粒体汇集于轴丝中央，形成线粒体鞘，分布于全尾部
E.
残余胞质脱落
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皮皮学刷刷变学霸
举一反三
【单选题】Their products are known not only for their low price, ______ for their high quality.
A.
but
B.
but also
C.
and also
D.
as well as
【判断题】Costco's strategy is to provide low price with high quality products, and at the same time to receive club fee as compenation
A.
正确
B.
错误
【简答题】HRB335所用钢种是优质碳素钢。 判断对错
【简答题】Dear Sirs, We have just bought from the producers a large quantity of high quality rugs and carpets at low prices. As you are one of our regular customers, we would like you to share in the excellent ...