假定你是李华，你的澳大利亚朋友Terry将去中国朋友家做客，发邮件向你询问有关习...

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：

1. 每处错误及其修改均仅限一词；

2. 只允许修改10处，多者（从第 11 处起）不计分。

Dear Charlie,

I’m writing to ask you the favor. To help us students have a better understand of American culture, the Student Union is now organized an American Culture Festival. We’re now bad in need of several American popular magazine that can reflect modern American life. So, could you please help buy some or send them to us? We will cover all the related to costs. Also, we would appreciate if you could see to it that the contents of the magazines were suitable for Chinese middle school students.

Thanks a lot! Please replying at your earliest convenience!

Yours,

Li Hua

阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式（不超过三个单词）。

Color blindness is very common. It affects 1. (rough) 1 in 12 men and 1 in 200 women in the world. People 2. blindness can’t see colors in a normal way.

There are 3. (variety) causes of color blindness. For the majority of color-blind people, color blindness is genetic, although some people become color-blind as a result of other diseases, such as diabetes(糖尿病), or they have 4. condition over time due to the aging process, etc.

Most color-blind people can see 5. (thing) as clearly as other people, but they are unable to fully "'see" red, green or blue light. There are different types of color blindness but there are extremely rare cases 6. people are unable to see any color at all. The most common color blindness is red/ green color blindness. Although 7. (know) as red/green color blindness, it doesn’t mean 8. (suffer) will only mix up red and green. It means they mix up all colors that have some red or green as part of the whole color.

The effects of color blindness can 9. (classify) into mild，moderate(中等的) or severe. About 40% of color-blind people are even unaware that they’re color-blind. Statistically speaking, most people 10. (have) a moderate form of red/ green color blindness can only identify 5 colored pencils from a standard box of 24 pencil crayons.

    The first day at school has left a deep_______ on me. I’ll never forget it.

As soon as I rushed into the classroom, the bell _______. A young beautiful woman came in, but she was _______, no smile on her face. “You are not permitted to _______ me in the course of class unless…”She was speaking when I heard a _______ “Lily, Lily” from outside the door. My grandmother was standing there with a pair of socks in her hand. I didn’t realize I was bare feet _______ then. I wanted to _______ them. But I dared not do that. I shook my hand, _______ “Don’t wait here any longer. Leave quickly.” As I did so, I still _______ my eyes on my teacher. I really didn’t want her to take ________ of me, but she did. She went out to get the socks. When she gave them to me, she looked at me for a while. My face suddenly turned ________ and my heart beat faster. I began to put the socks on. Unfortunately I was so nervous that my ________ hands couldn’t get them ________ my feet easily. Just then I heard my name called. I ________ from my seat quickly. “Can you count the numbers from one to one hundred?” the teacher asked. I nodded. ________ her surprise, I did very ________. Finally she said, “Be seated, please. Study hard.” I looked ________ her to find a smile on her face. I felt ________ at last.

The first day at school has stayed in my ________ as something ________ but sweet.

1.A.memory B.imagination C.impression D.feeling

2.A.struck B.rang C.beat D.rung

3.A.serious B.humorous C.gentle D.modern

4.A.trouble B.question C.interrupt D.excuse

5.A.sound B.voice C.noise D.word

6.A.before B.after C.just D.until

7.A.wear B.throw C.accept D.get

8.A.saying B.meaning C.crying D.shouting

9.A.fixed B.laid C.opened D.shut

10.A.care B.attention C.notice D.interest

11.A.pale B.white C.black D.red

12.A.shaking B.dirty C.small D.own

13.A.into B.onto C.over D.through

14.A.stood B.raised C.rose D.jumped

15.A.With B.For C.Great to D.Much to

16.A.good B.well C.bad D.badly

17.A.around B.over C.up at D.through

18.A.relaxed B.surprised C.disappointed D.puzzled

19.A.body B.classroom C.brain D.memory

20.A.strange B.amazing C.embarrassing D.forever

    House fires cause many deaths each year.1.. So, it's important to teach them that fire is a tool, not a toy. Kids must understand that they'd better not play with fire. You should keep matches and lighters out of their reach.

A smoke alarm greatly reduces your chances of being hurt in a fire, especially when you are in your dream. 2..  Also, you ought to have two plans for getting out of your house if there is a fire and practice these plans in the dark with your family.

A smoke alarm warns you of the danger. When you hear it, take action immediately. When you come to a closed door, check it with the back of your hand. If it feels hot, there may be smoke or fire behind the door, so take care.  3.  , call the fire department from a neighbor's house. If a family member or a pet is caught inside, you shouldn't go back in. Firemen know how to perform rescues safely.

4. . Change the batteries at least once a year. You should use the test button each month to see if the alarm and batteries are still working. A smoke alarm lasts about ten years. You ought to change it even if it seems to be working. Every year the fire and rescue service is called to over 600,000 fires, which result in over 800 deaths and over 17,000 injuries. 5. .

A. Once you are out of your house

B. Make sure of working hours of fire fighters

C. A large number of these fires are set by kids

D. Although your friends know how to put out fire

E. So you should have a smoke alarm outside your bedroom

F. But remember, the alarm can work only if it has enough power

G. Actually most of them can be avoided with working smoke alarms

    People have been wondering why elephants do not develop cancer even though they have lifespans (寿命) that are similar to humans, jiving for around 50 to 70 years.

Now scientists believe they know why. A team at the University of Chicago, US has found that elephants carry a large number of genes that stop tumors (肿瘤) developing. To be precise, they found 20 copies of an anti-tumor gene called TP53 in elephants. Most other species, including humans, only carry one copy.

According to the research, the extra copies of the gene improved the animal’s sensitivity to DNA damage, which lets the cells quickly kill themselves when damaged before they can go on to form deadly tumors.

“An increased risk of developing cancer has stood in the way of the evolution of large body sizes in many animals,” the study author Dr Vincent Lynch told The Guardian. If every living cell has the same chance of becoming cancerous (癌变的), large creatures with a long lifespan like whales and elephants should have a greater risk of developing cancer than humans and mice. But across species, the risk of cancer does not show a connection with body mass.

This phenomenon was found by Oxford University scientist Richard Peto in the 1970s and later named “Peto’s paradox (悖论)”. Biologists believe it results from larger animals using protection that many smaller animals do not. In the elephant’s case, the making of TP53 is nature’s way of keeping this species alive.

The study also found that when the same genes were brought to life in mice, they had the same cancer resistance as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers spreading or even developing in the first place.

“Nature has already figured out how to prevent cancer,” said Joshua Schiffman, a biologist at the School of Medicine, University of Utah, US. “It’s up to us to learn how different animals deal with the problem so that we can use those strategies to prevent cancer in people.”

1.Why are elephants unlikely to develop cancer?

A.They have a rather large body size.

B.Their genes suffer no DNA damage.

C.Certain genes in their body kill existing tumors.

D.They carry many genes to prevent tumors developing.

2.According to the passage, what has been a risk in the evolution of large animals?

A.Deadly tumors. B.The huge body mass.

C.Cells killing themselves. D.Sensitivity to DNA damage.

3.What does the underlined part “This phenomenon” in Paragraph 5 probably refer to?

A.Larger animals have protection from TP53.

B.The risk of cancer is not related to body size.

C.Larger animals suffer the same risk of cancer as smaller ones.

D.The larger animals are, the bigger risk of cancer they will have.

4.What can be concluded from the passage?

A.Depending on nature is surely enough to fight against cancer.

B.The TP53 genes have proved useful in stopping cancer in people.

C.Humans are expected to prevent cancer with the making of TP53.

D.The extra copies of elephants, genes are used to cure cancer patients.