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I. Choose the best answer.
1. Don't play computer games. It's bad for your study and health.
A. many too
B. too many
C. much too
D. too much
2. Denis failed to find the answer the Physics problem.
A. of
B. for
C. on
D. to
3. For time being, your job is to be well prepared for the entrance exam.
A. a
B. an
C. the
D. /
4. Helen often offers an old man or lady cross the road.
A. to help
B. help
C. helps
D. helping
5. Now, an app called Xiao Du can human voices and talk with the driver.
A. raise
B. replace
C. recognize
D. refuse
6. Pet cats don't need to be walked. , busy people prefer them to dogs.
A. What's more
B. For this reason
C. In addition
D. In a way
7. Of the four seasons in Shanghai, spring is one in a year.
A. wet
B. the wetter
C. wettest
D. the wettest
8. An underground runs much than a bus.
A. quickly
B. more quickly
C. quicker
D. most quickly
9. Since the 1940s, computers an essential part of people's life and work.
A. have been
B. were
C. have become
D. become
10. Computers cannot replace human brains they are rather intelligent now.
A. because
B. so that
C. while
D. even though
11. The clean floor feels . Be careful when you walk on it.
A. smoothly
B. smooth
C. roughly
D. rough
12. — does the pink suitcase cost?
—100 dollars.
A. How many
B. How expensive
C. How much
D. How cheap

After the greatest Physicist of the 20th century, Albert Einstein had died, brain scientists and doctors cut open his brain to discover why it was so magical. 1 we don't really understand why Einstein was so talented in science, he was still an ordinary human in daily life. Here are stories about the funny side of this talent. When Einstein started to work in America, someone asked him what he needed. He replied that he 2 a desk, some paper, a pencil and a big waste-paper basket to hold his mistakes in. He meant that even the most intelligent man like him made mistakes and learned by correcting 3. Einstein considered time as precious. He thought it unnecessary for people to keep in mind what could be easily found in a book. That's 4 he never remembered his own phone number. He knew what should be remembered and what should not, as time mattered a lot to a scientist. Einstein was 5. Once a student asked him what his Theory of Relativity really meant. He explained: if you sat beside a hot fireplace for two minutes in a hot day, you would feel as if it were two years. But if you sat 6 an attractive girl for two hours, you would feel as if it were just two minutes. Got it?