科学探究是同学们进行化学学习的一种重要方式．它主要包含下面这几个要素：提出问题、猜想与假设、制定计划、进行实验、收集证据、得出结论等．请阅读下面内容，针对金属镁进行有关探究．镁和铁、铜、铝一样，是一种_刷题宝

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科学探究是同学们进行化学学习的一种重要方式．它主要包含下面这几个要素：提出问题、猜想与假设、制定计划、进行实验、收集证据、得出结论等．请阅读下面内容，针对金属镁进行有关探究．

镁和铁、铜、铝一样，是一种用途广泛的金属，金属镁可用于制造航天材料、各式各样的合金等，一些烟花和照明弹里也含有镁粉．

上一题下一题 0.0难度选择题更新时间:2017-06-23 01:00:05

答案(点此获取答案解析）

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联系语境，体会划线词的含义。

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如图所示，薄壁圆柱形容器A、B放在水平面上（容器足够高）．A中盛有深度为3h的液体甲，B中盛有深度为4h、质量为4kg，体积为5×10^﹣3m³的液体乙．求：

同类题3

―______________
―Because they are very smart.

同类题4

下列属于种群的是（）

同类题5

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. ____

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