Kate won her first gold medal at the age of 7 ._刷题宝

题干

Kate won her first gold medal at the age of 7 .

A：when it was 7

B：when she was 7

C：at 7

D：when I was 7

上一题下一题 0.0难度选择题更新时间:2017-11-30 10:58:40

答案(点此获取答案解析）

B

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如图表示某种动物细胞在生命活动中染色体的数目变化，据图判断，发生着丝点分裂的区段有（）

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阅读理解。

Oliver: Good afternoon, Mike.

Mike: Good afternoon, Oliver. What time is it now?

Oliver: It's five fifty. Why?

Mike: My mother is ill. My father isn't at home. I must go home and cook dinner.

Oliver: I'm sorry to hear that. Can you cook meals?

Mike: Sure. And I can wash clothes, too.

Oliver: You're helpful. I can't do that, but I can clean the room.

Mike: You are also helpful! I have to go. Goodbye!

Oliver: Bye.

根据对话内容，选择正确答案。

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3MgO+mB，则下列说法正确的是（）

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我国最大的邻国是（）

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