正确答案: B

错误

题目：胞质运动是胞基质沿一个方向作循环流动。( )

解析：B

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举一反三的答案和解析：

[单选题]面对近年来原材料劳动力等价格上升的压力，我国沿海某服装出口企业，把生产环节转移到劳动力、土地等生产要素具有优势的内陆地区，并致力于产品研发、品牌设计和营销推广，从而大大提高了产品出口竞争力。该企业竞争力提高的因素有①调整经营战略，利用资源优势 ③依靠技术创新，维持低价竞争

①③

[单选题]减数分裂发生在( )的过程。

花粉母细胞→小孢子

[单选题]This text is most probably taken from_

a newspaper report

[单选题]It is obvious to the students ( )they should get well prepared for their future.

that

[单选题]67 What does the author think is a surprise?

Some states still keep the tobacco tax low.

[单选题]

when

[单选题]—why, Jack, you look so tired!---Well, I _____the house and I must finish the work tomorrow.

have been painting