英语题目求高人解答谢谢！Careful and careless are as different as fire an

英语题目求高人解答谢谢！
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. Newton, the famous English scientist, was such a person.
Once Newton invited a friend to dinner at home. When they were ready to eat, Newton left to get a bottle of wine (洒). 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 quite forgot his friend and the dinner. Another time, Newton was leading a horse up a mountain, and held the rein (缰绳) in his hand. 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.
Einstein was another example. Once he was waiting for a friend at a bridge. 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. But after he put the paper into his pocket, he attain forgot he was standing in the rain.

21.When Newton and his friend were ready to eat, Newton_______.
A.had a new idea for his experiment B.went to do his experiment
C.couldn't find his way back D.left to get a bottle of wine
22.Why was the horse gone when Newton got to the top of the mountain?
A.He kept thinking about problems and lost the rein.
B.He was not friendly to the horse.
C.He didn't walk fast enough.
D.The horse lost its way.
23.Which of the following sentences is true?
A.Einstein kept thinking in the rain.
B.Einstein stopped thinking because of the rain
C.Einstein would like to wait for his friend in the rain.
D.The rain helped Einstein keep thinking.
24.Newton and Einstein were careless about their _____- and careful in their_______.
A.experiments, studies B.life, studies C.studies, life D.work, life
25. _______ scientists are both careful and careless like Newton and Einstein.
A.No other B.Very few C.Many D.All