最先测出万有引力常量和最早提出人造卫星思想的科学家分别是:_刷题宝

题干

最先测出万有引力常量和最早提出人造卫星思想的科学家分别是:（）

A：牛顿、牛顿

B：牛顿、开普勒

C：卡文迪许、牛顿

D：牛顿、第谷

上一题下一题 0.0难度选择题更新时间:2019-08-22 08:43:32

答案(点此获取答案解析）

C

同类题1

阅读下面短文，根据内容为句子排序。

Today was a fun day. I walked to Mike's home in the morning. I studied English with him. We read funny stories together

Then I went to a park by bike. I flew(fly的过去式) kites. It was a windy day. Suddenly my kite flew into the lake

A dog saw the kite. He jumped into the lake and swam to it. Five minutes later, he gave(give的过去式) the kite back to me. I was very grateful to him.

(____)I flew kites.

(____)I went to Mike's home.

(____)The dog jumped into the lake and swam to the kite.

(____)The kite flew into the lake.

(____)He gave the kite back to me.

同类题2

按图的装置进行电解实验：A极是铜锌合金，B极为纯铜，电解质中含有足量的铜离子．通电一段时间后，若A极恰好全部溶解，此时B极质量增加7.68克，溶液质量增加0.03克，则A合金中Cu、Zn原子个数比为

同类题3

根据所学知识回答问题

同类题4

So involved with computer games________that teachers at summer computer camps often have to
force them to break for sports and music.

同类题5

我能给句子选择最恰当的标点符号。

①看见慈祥的外公大发脾气____我心里又害怕又奇怪____一枝画梅____有什么稀罕的呢____

②有一次命题作文写____一件不愉快的往事____我的情绪分外激动____觉得自己得到了一个大显身手的好机会____小时候受过的一次委屈____平常积累的那些描写苦恼心境的词语____像酵母一样似的发挥了作用____

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