题目内容
Tim, ______ you ______ your homework yet?
A. were, finish B. have, finished C. are, finished D. do, finish
B
解析:
略
云南师大附小一线名师提优作业系列答案
冲刺100分单元优化练考卷系列答案We were on tour a few summers ago, driving through Chicago, when right outside of the city, we got pulled over. A middle-aged policeman came up to the car and was really being troublesome at first. Lecturing us, he said, “You were speeding. Where are you going in such a hurry?” Our guitarist, Tim, told him that we were on our way to Wisconsin to play a show. His way towards us totally changed. He asked, “Oh, so you boys are in a band（乐队）？” We told him that we were. He then asked all the usual band questions about the type of music we played, and how long we had been at it. Suddenly, he stopped and said, “Tim, you want to get out of this ticket, don’t you?” Tim said, “Yes.” So the officer asked him to step out of the car. The rest of us, inside the car, didn’t know what to think as we watched the policeman talk to Tim. Next thing we knew, the policeman was putting Tim in the back of the police car he had parked in front of us. With that, he threw the car into reverse（倒车），stopping a few feet in back of our car. Now we suddenly felt frightened. We didn’t know if we were all going to prison, or if the policeman was going to sell Tim on the black market or something. All of a sudden, the policeman’s voice came over his loudspeaker. He said, “Ladies and gentlemen, for the first time ever, we have Tim here singing on Route 90.” Turns out, the policeman had told Tim that the only way he was getting out of the ticket was if he sang part of one of our songs over the loudspeaker in the police car. Seconds later, Tim started screaming into the receiver. The policeman enjoyed the performance, and sent us on our way without a ticket.
【小题1】The policeman stopped the boys to .
| A．put them into prison | B． give them a ticket |
| C．enjoy their performance | D．ask some band questions |
| A．had long been at the band | B．played the music he loved |
| C．were driving for a show | D．promised him a performance |
| A．joyful | B．calm | C．nervous | D．frightened |
A healthy dose of sunshine may be the secret to staying young, British scientists have disclosed.
Vitamin D is produced naturally by the skin in response to sunlight and may help to slow the ageing process and protect against heart disease, according to the study.
Researchers from King's College London studied 2,160 women a
ged between 18 and 79, looking at their telomeres - a biological marker of ageing found in DNA．As people get older, their telomeres get shorter and they are easy to have illnesses.
But the study found women with high levels of vitamin D had comparatively longer telomeres - a sign of being biologically younger and healthier.
The study suggests vitamin D may help to slow down the ageing process of DNA, and therefore the ageing process as a whole.
Lead researcher Dr Brent Richards said: "These results are exciting because they prove for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D．
"This could help to explain how vitamin D has a protective effect on many ageing related diseases, such as heart disease and cancer."
He said further studies are required to confirm the findings.
Professor Tim Spector, head of KCL's twin research unit, and a co-author of the report, added: "Although it might sound absurd(荒谬的), it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process."
Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.
Other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.
【小题1】What’s the best title of this passage?
| A．Sunshine helps to keep you young. |
| B．Vitamin D has a protective effect on many diseases. |
| C．Telomeres - a biological marker of ageing. |
| D．People have found the secret to having a long life. |
A.through water. B. through sunshine.
C.through food. D.both B and C.
【小题3】Which of the following is not true according to the passage?
| A．women with high levels of vitamin D shows a sign of being biologically younger and healthier. |
| B．vitamin D has a protective effect on many ageing related diseases. |
| C．too much sunshine may increase our risk of skin cancer. |
| D．It has been proved that sunshine helps to keep you young. |
书面表达（满分25分）
假如你是李华，你的美国笔友Tim给你发了一封电子邮件，向你了解你参加上海世博会志愿者的服务工作的情况。请参照表格中的提示，给Tim写一封邮件回复。
|
世博会简介 |
特点 |
首次在发展中国家举行 |
|
参观人数 |
超过7千万 |
|
|
志愿工作 |
地点 |
北京馆 |
|
职责 |
介绍北京的文化和著名建筑 |
|
|
工作之余 |
参观其它场馆；了解科技成就及新发明；…… |
注意：
1．邮件的开头和结尾已为你写好。
2．词数不少于100。
3．参考词汇：上海世博会the Shanghai Exposition 北京馆Beijing Pavilion
Dear Tim,
I’ve received your email, asking me about my volunteer work in the Shanghai Exposition. Now let me tell you something exciting.
_______________________________________________________________
Best wishes!
Fondly yours,
Li Hua