题目内容：

Physics is a different world now. Will there ever be another Einstein?

Scientists say a new Einstein will appear, but it may take a long time. After all, more than 200 years separated Einstein from his nearest rival (对手) , Isaac Newton. Many physicists say the next Einstein hasn’t been born yet, or is only a baby now. That’s because the searching for a unified(统一的) theory that would explain all the forces of nature has pushed current mathematics to its limits. New math must be created before the problem can be solved.

But researchers say there are many other factors working against another Einstein appearing anytime soon. For one thing, physics is quite a different field today. In Einstein’s day, there were a few thousand physicists worldwide, and fewer theoreticians. Education is different, too. One extremely important aspect of Einstein’s training that failed to be considered is the philosophy he read as a teenager. It taught him how to think theoretically about space and time.

And he was a skilled musician. The interplay between music and math is well known. Einstein would fiercely play his violin as a way to think through a knotty physics problem.

Today, universities have produced millions of physicists. There aren’t many jobs in science for them, so they go to Wall Street and Silicon Valley to apply their analytical skills to more practical and rewarding efforts.

Besides, those who stay in science don’t work alone. It’s very difficult to imagine an independent person like Einstein ever tolerating this.

1.Which of the following best explains the reason that the next Einstein hasn’t been born yet?

A. Education today doesn’t pay enough attention to philosophy teaching.

B. We don’t know who will be another Einstein among newly-born babies.

C. There were more physicists in Einstein’s time than today.

D. Math today is limited and cannot help the further development of physics.

2.One of the reasons that made Einstein a great scientist is _________.

A. the philosophy he read in his teens

B. the lack of physicists in his day

C. the knowledge learnt from Isaac Newton

D. his decision of not working at Wall Street

3.The underlined word “knotty” here probably means________.

A. interesting and useful    B. important and meaningful

C. difficult and puzzling    D. realistic and hard

4.From Paragraphs 3 and 4, how many reasons does the writer give to explain that another Einstein hasn’t appeared?

A. One.    B. Two.

C. Three.    D. Four.