题目内容：

Careful and careless are as different as fire and water. But it is strange that quite a few scientists have both these qualities (品质). _1.__

Newton, the famous English scientist, was such a person. _2.__ When they were ready to eat, Newton left to get a bottle of wine. But after his friend had waited for a long time, Newton still didn’t come back. At last his friend found Newton in his lab. When Newton was going to get the bottle of wine, he suddenly had a new idea for his experiment (实验). So he forgot his friend and the dinner. _3.__ While he was walking, he kept thinking about problems. When he got to the top of the mountain, he found that the rein was not in his hand and that the horse was gone.

_4.__ Once he was waiting for a friend at a bridge. While waiting, he became lost in thought. It started to rain. __5._ When he took out a piece of paper to write something down, the paper was wet and then he knew that it was raining. But after he put the paper into his pocket, he again forgot he was standing in the rain.

根据短文内容将下列各句还原到文章中空白处，并将其标号填到相应题号后的横线上。

A. Another time, Newton was leading a horse up a mountain, and held the rein (缰绳) in his hand. B. Once Newton invited a friend to dinner at home. C. The rain kept on for some time. D. Einstein was another example. E. They are both careful and careless.