—What a fine day！Shall we go picnicking?

—________.But we need to be home before six o’clock for the football match.

ALBANY，New York—Students who rely on working at night to improve their
grades might want to sleep on that strategy: A new survey in the US says those who never study all night have slightly higher grades than those who do.
A survey of 120 students at St.Lawrence University found that students who had never pulled an all­nighter on average had higher grades than those who had. The survey found those who did not study through the night had a grade point average of 3.2 compared to 2.95 for those who did.
The study, by assistant professor of psychology Pamela Thacher, is to be included in the January issue of Behavioral Sleep Medicine.
“It's not a big difference，but it's pretty striking, ” Thacher said, “I am primarily a sleep researcher and I know nobody thinks clearly at 4∶00 in the morning. You think you can do，but you can't.”
Many college students, of course, have inadequate or irregular sleep, for reasons ranging from excessive caffeine to poor time management.
“A lot of students were under the impression that all­nighters were a very useful tool for accomplishing work, and that caffeine intake was very useful in meeting deadlines and stuff like that, ”said Mr Chatani, who had a 3.4 grade point average last term.
Dr Howard Weiss, a physician at St.Peter's Sleep Center in Albany, said the study results made sense.
“Certainly that data is out there showing that short sleep duration absolutely interferes with concentration and performance on objective testing, ”he said.
“Some night owls do get good grades, of course，which may be explained by circadian (昼夜节律的，生理节奏的) rhythms, ”Weiss said, “Some people have different 24­hour body clocks from others, and may do better depending on classes and testing time.”
63.The purpose of the passage is to tell us 　　　　
A. the bad effects of pulling an all­nighter
B. pulling an all­nighter leads to sleep problems
C. Thacher's doubt about all­nighters
D. all­nighters influence students' grades
64. According to Thacher's study，around 4 o'clock in the morning is a time when 　　　　.
A. one can think more clearly
B. one has his/her best memory
C. one can't learn efficiently
D. one's brain falls into a period of deep sleep
65.What can we know from Dr Howard Weiss' words？
A. Thacher's study is not convincing enough.
B. He believes in Thacher's study.
C. Thacher's study makes no sense.
D. Thacher should take exceptions into consideration.

　                         　A

The nervous-looking young man had waited for a few moments outside the jeweler's shop before he got enough courage to enter．He was warmly greeted by a young assistant. James felt a rush blood to his face as he explained he would bring in his future wife to choose a birthday present．The assistant listened carefully and told him he'd better buy a necklace. He wasn't used to buying jewelry and was a little worried about overspending. After some discussion as to reasonable price and type（类型）, the assistant showed him dozens of necklaces and helped him to choose. At last James chose one and left the shop promising to return at five o'clock. When, half an hour later, James did return to the shop with his future wife, Laura, the assistant acted as if she had never seen him before. When she was asked to show them some necklaces, she first brought out some inexpensive ones for them to choose and then gave them the one she had prepared. A choice was soon made and they went away, satisfied. James would certainly come back to buy what he wanted when he got married.

1.A good title（题目）for this passage is ________.

　　A. A Clever Assistant     B. Buying a Birthday Present

　　C. How to Choose a Necklace      D. A Brave Young Man

2. Why did the young man look nervous?

    A. Because he had never bought jewelry before.

    B. Because he would get married.

    C. Because he didn’t have enough money to buy a satisfying present.

    D. Because he feared he would be laughed at by shop assistants.

3.The word "overspending" in this passage means ________.

　　A. spending too much money       B. spending too much time

　　C. spending more time than be planned

　　D. spending too much time and too much money

4.When James told the assistant why he wanted to buy a present, his

face________.

　　A. turned pale　　B. turned black   C. turned yellow　D. turned red

5.James would come back to buy what he wanted because ________.

　　A. the necklace was good    B. Laura liked the necklace

C. the assistant knew how to satisfy the people who came to buy things

　　D. the assistant who served James was very beautiful

Miss Gogers taught physics in a New York school. Last month she explained to one of her classes about sound, and she decided to test them to see how successful she had been in her explanation. She said to them,“Now I have a brother in Los Angeles. If I was calling him on the phone and at the same time you were 75 feet away, listening to me from across the street, which of you would hear what I said earlier, my brother or you and for what reason?”

　Tom at once answered,“Your brother. Because electricity travaels faster than sound waves.”“That’s every good,”Miss Gogers answered; but then one of the girls raised her hand, and Miss Gogers said.“Yes, Kate.”

　“I disagree,”Kate said.“Your brother would hear you earlier because when it’s 11 o’clock here it’s only 8 o’clock in Los Angeles.”

Miss Gogers was teaching her class_________.

A.how to telephone 　    B.about electricity 　 C.about time zone 　  D.about sound

Miss Gogers raised this question because she wanted to know whether______.

　A.it was easy to phone to Los Angeles

　B.her student could hear her from 75 feet away

　C.her students had a good command of her lesson about sound

　D.sound waves were slower than electricity

Tom thought that electricity was _________.

　A.slower than sound waves   　B.faster than sound waves

　C.not so fast as sound waves  　D.as fast as sound waves

Kate thought Tom was wrong because _______.

　A.clocks in Los Angeles showed a different time from those in New York

　B.electricity was slower than sound waves

　C.Tom was not good at physics at all

　D.Tom’s answer had nothing to do with sound waves

Whose answer do you think is correct according to the law of physics?

　A. Tom’s 　     　B. Kate’s 　　C. Bath A and B 　　D. Neither A nor B