题目内容：

信息匹配（共1小题）

阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。每个选项只能用一次。

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)．They are both careful and careless．

1.    ．

Once Newton invited a friend to dinner at home． When they were ready to eat, Newton left to get a bottle of wine (酒)． 2. , 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．So he quite forgot his friend and the dinner． Another time, Newton was leading a horse up a mountain, and he held the rein (缰绳) in his hand． While he was walking along, he kept thinking about problems．3.  , he found that the horse was gone．

Einstein was another example．  4.  ． While waiting, he became lost in thought． It started to rain． The rain kept on for some time． When he took out a piece of paper to write something down, the paper was wet and then he knew that it was raining．5. ,he again forgot he was standing in the rain．