大多数细胞的直径不到0.01cm，细胞之所以体积小原因是_刷题宝

题干

大多数细胞的直径不到0.01cm，细胞之所以体积小原因是（　　）

A：有利于物质交换和通讯

B：代谢旺盛

C：生活力强

D：细胞分裂快

上一题下一题 0.0难度选择题更新时间:2017-11-19 10:52:46

答案(点此获取答案解析）

A

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继“天宫”一号空间站之后，我国又发射“神舟八号”无人飞船，它们的运动轨迹如图所示。假设“天宫”一号绕地球做圆周运动的轨道半径为r，周期为T，万有引力常量为G。则下列说法正确的是（）

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在探究“影响滑动摩擦力大小的因素’’实验中：

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补全对话

A. We Chinese usually eat rice dumplings this day.

B. I hate eating rice dumplings.

C. Thank you for your rice dumpling.

D. I don't think so.

E. Would you like to have one?

F. Already?

G. How about you?

A: What's the date today?

B: It's June 2^nd.

A: ____ Then it's Dragon Boat Festival today, isn't it?

B: Yes. ____

A: Did you have rice dumplings this morning?

B: Sure. ____

A: I didn't.

B: What a pity! But I happen to have got some with me. ____.

A: I'd love to. By the way, why do you call it Dragon Boat Festival?

B: Because in China, people race dragon boats this day every year.

A: Oh, I see. ____

同类题4

下面的计算机程序表示了一个分段函数，其图象如图1所示，则图2“▲”处应填写的条件是____．

同类题5

— Which of the two magazines will you buy?

— I will take _______. ______ are useless to me.

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