正确答案: B

错误

题目：硅藻细胞分裂时，新形成的半片始终作为子细胞的上壳，老的半片作为下壳。( )

解析：B

查看原题

举一反三的答案和解析：

[单选题]对晋唐画风的理解，下列表述正确的一项是

观察、审阅、理解和提炼在晋唐画风的形成中起到了关键作用，在西方绘画中也同样重要。

[单选题]When was duet most probably found to be the very hero?

a couple of days after the girl was rescued

解析：推理判断题。根据文章倒数第二自然段可以推断出本题选B。

[单选题]从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。21. John plays basketball well, ___his favorite sport is badminton.

yet

[单选题]38_____

once

[单选题]．FDA can ask for the proof of safety and effectiveness of a product ________.

if it is a drug