题目内容：

    The Mayos, two young brothers named Will and Charlie Mayo lived in Rochester, Minnesota. Both of them became doctors after their graduation from medical school.

One summer day on their way back home, the sky was growing dark. Everything was strangely quiet. “Look!” Will pointed. “A tornado(龙卷风)!” Luckily, they were not hurt. But many people got injured. As soon as possible, the Mayos turned the town hall into an emergency hospital. They helped the injured people as much as they could.

After the tornado ended, the brothers realized that there were things they didn't know. “ Why don't you and I take turns traveling?” said Will to Charlie. “One of us can stay and look after our patients. The other can visit the best hospitals and doctors in the world. That way we can keep learning and be better doctors.”

From that time on, the Mayos traveled the world, learning about medicine in turn. Soon they became well known around their area. They published over 1, 000 papers in medical magazines. Even though they were successful, they were never interested in honor(荣誉). Neither one thought he was more important than his brother. Whenever one of them was chosen for an honor, he would accept the honor with the same four words, “My brother and 1....”.

“One nice thing about sharing knowledge,” Charlie once said, “is that after you give it to someone else, you still have it!” If you do choose to give something to someone else, or accept what others give to you, you may discover that sharing makes you feel happy, just as the Mayo brothers did.

1.Which is true about the Mayos?

A.They are doctors. B.They graduated from art school.

C.They look quiet and strange. D.They were injured in the tornado.

2.After the tornado ended, the Mayos realized that ______.

A.they had to go back to university B.they should travel and have fun

C.they should go on further learning D.they had to set up their own hospital

3.When one of the Mayos accepts an honor, he may say, “My brother and I ______.”

A.are well known B.own it together C.don't honor it D.care about it

4.What does the passage mainly tell us?

A.People have to learn to be a good doctor.

B.The Mayos were well known in their area.

C.Sharing makes people happier and closer.

D.The Mayos met a tornado on their way back home.