You just catch a cold. There is nothing to ___________._刷题宝

题干

You just catch a cold. There is nothing to ___________.

A：worry about

B：worry

C：be worrying

D：be worry

上一题下一题 0.0难度选择题更新时间:2018-04-21 09:18:39

答案(点此获取答案解析）

A

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依次填入下面一段文字横线处的语句，使上下文衔接最恰当的一组是(　　)
科学家们利用一个每秒钟可拍摄1 000张图像的摄像机分解出水滴落到不渗水物质表面的运动情况：当水滴以很慢的速度下落时，________，________，________。这个过程中，水滴表现出的弹性比橡胶球更好。当水滴像雨水一样落下时，________，________，________，顶端溅出一些小水滴。科学家们的研究还发现，虽然水滴的撞击与速度有关，但水滴的弹跳与其速度、与支撑物的接触时间无关，只与其质量有关。
①水滴受撞击而变形
②水滴会破裂、分散
③像气球一样反弹得很高
④最后落下时完全变形
⑤之后像一个“细长的酒瓶”一样弹起
⑥但又会完全重新组合起来

同类题2

南极地区是科学家的天然实验室。读图回答问题。

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根据短文内容的理解，完成下列各题。

Many people think if you turn off your TV, your life will be colorful. They also suggest children should watch less TV. TV can give children big problems. First, it's bad for your studies, you spend too long on TV. You can't do well in school. Second, it's bad for your health. Because you watch too much TV, you are getting overweight and your eyesight is getting worse. Third, it's bad for your family life. While your families are watching TV, they don't talk too much. Also it has too much fighting. Some children always follow the fighting in real life.

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等腰△ABC中，AB=AC=5，△ABC的面积为10，则BC=____

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