假设你是李华，你的美国朋友Peter写信给你说他梦想成真即将来中国研学旅游，请你...

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．每处错误仅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：在错的词下面划一横线，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．

To increase the aware of protecting the environment， last Saturday we， some volunteers， carried out environmental protection activity in the Civil Square．

In the morning， we have gathered at the school gate at 7：00． Then we walked to the square， when we were divided into several groups． Some collected the rubbishes on the square， some cleared the old posters off the walls， and another swept the ground． The duty of my group is to deliver environmental protection brochures and introduces the importance of environmental protection．

Time passed quickly． It was getting late after we knew it and the square looked more beautifully． Tiring as I was， I was very happy because we did do something to protect the environment．

阅读下列材料，在空白处填入适当的内容（一个单词）或括号内单词的正确形式．

For those who love travel， particularly rail travel， China in 1987 was a can't﹣miss kind of place．  In1987， China was still operating steam trains on some rail routes，1.made people from many countries amazed． Bruce Connolly， a photographer from Scotland， 2.（be） one of them．

Connolly first came to China in 1987，3. （start）  his continuous travelling throughout China． Since then， he 4. （travel） to most parts of China except Fujian， Zhejiang and Jiangxi． Wherever he went， his camera remained by his side． During his journeys in China， Connolly found China very different from 5.he saw in photographs， which showed Chinese people very religious in the way they dressed and behaved．6.， what he saw was that people were 7. （friend）， welcoming and wore bright clothes． In the early years of his journey， most Chinese people were fascinated with foreigners visiting China， but now that has changed in cities such as Beijing and Shanghai， foreigners are no longer8. （ curious）．

Another dramatic change that Connolly has felt in China is 9.． widespread use of new technology． China has become one of the most tech﹣savvy（懂技术的）societies． People now do everything with10. （they） smartphones， and use of cash is almost disappearing．

    Tara and Lara were twins． Even their parents found it too hard to find the _____between them so the girls were_____  in different schools．

Although they look the same， both the girls differ in_____ else．  They don't have any common favorites． Lara is a night﹣bird and study all the night until she finishes．_____ ， Tara is a morning bird； she used to _____ early in the morning． In addition， Lara wears light darker colors and modem outfits， while Tara likes light colors and _____ dresses．

This wasn't the_____with these twin girls．  However， they _____each other that the opposite one was wrong．

While both sides have the advantages and disadvantages， the _____ continues． They fight mainly about ____ things all﹣day and during the study time． Their parents decided to _____ to their arguments．

Lara and Tara blindfolded their _____ with a black ribbon． Their _____brought them to the dining room． In the dining room， a big_____ was placed in the middle． Lara stood on one side of the board and Tara stood on the other side of the board． Both the ribbons were _____． The girls were surprised to see a huge board in between them．

Now， their father asked Lara， what is the color of the board？ She replied， "It is black!" Their mother asked Tara the same question． She replied， "It is white!"

They began to argue． While Lara _____ strongly it was black， Tara was_____ it was white．

Now， they were asked to_____  their places． They both were surprised and shocked． The board with Lara's side was painted black and Tara's was white， which was _____ by them． They_____  that they were right on their own perspective only．

1.A. similarities B. differences C. distance D. appearance

2.A. attended B. annoyed C. admitted D. surrounded

3.A. everything B. something C. nothing D. somewhere

4.A. Furthermore B. What's more C. Besides D. To the contrary

5.A. fall asleep B. fall apart C. wake up D. work out

6.A. fashionable B. plain C. antique D. traditional

7.A. feature B. problem C. situation D. emotion

8.A. fought B. competed C. appreciated D. hated

9.A. harmony B. correspondence C. argument D. friendship

10.A. meaningful B. simple C. strange D. universal

11.A. put an end B. devote themselves C. adjust D. contribute

12.A. mouths B. ears C. hands D. eyes

13.A. brothers B. teachers C. parents D. friends

14.A. subject B. board C. screen D. monitor

15.A. fixed B. recovered C. tom D. removed

16.A. insisted B. defended C. required D. suggested

17.A. conscious B. aware C. confident D. convenient

18.A. nun B. exchange C. depart D. hold on

19.A. confirmed B. proved C. convinced D. compared

20.A. disagreed B. mentioned C. swore D. understood

The holiday season means friends， family， parties﹣﹣and lots of unhealthy food．1.

Save your pocket money．

If you're going to relax a few times over the season， concentrate on foods that are special or unique to this time of year ﹣ not the ones you can get year﹣round to avoid holiday weight gain， says Gary Foster， PhD， chief scientific officer for Weight Watchers．  That means letting yourself enjoy a piece of pumpkin pie on Thanksgiving，2. The seasonal focus means when the holidays are past， the temptations will go with them and you can return to healthy eating．

Wait to enjoy．

"We recommend you delay your drink until you have food in your stomach，"says Elizabeth Politti， RD， nutrition director for the Duke Diet and Fitness Center． She explains that food can help delay the absorption of alcohol． "Set some limits for yourself about alcohol such as that you won't have more than one or two drinks．"  3. If one glass of wine makes you completely lose your eating inhibitions（抑制），maybe it's better to hold in the face of food temptation．

4.

If you're a regular gym rat， great． But if not， you can still avoid holiday weight gain by taking every opportunity to stay physically active． That means taking the stairs instead of the elevator， or getting off the bus a few stops early﹣﹣ 5. And add bits of intensity， short bursts of more activity， whenever you can． These are the best workouts for people who hate exercise．

A．Stay active．

B．And know yourself．

C．When you're tired， your defenses go down

D．but not a stack of chocolate chip cookies at the office Christmas party．

E．Thanksgiving and New Year's aren't really 12weeks of nonstop eating

F． all the little tricks for adding activity to your day you've read before．

G． These expert tips will help you avoid holiday weight gain without compromising the fun．

    "IF ALIENS are so likely， why have we never seen any？" That is the Fermi Paradox（悻论） ﹣ named after Enrico Fermi， a physicist who posed it in 1950．

Fermi's argument ran as follows． The laws of nature supported the appearance of intelligent life on Earth． Those laws are the same throughout the universe． The universe contains zillions of stars and planets． So， even if life is unlikely to arise on any particular astronomical body， the sheer abundance of creation suggests the night sky should be full of alien civilizations． Fermi wondered why aliens had never visited the earth． Today， the paradox is more usually cast in light of the inability of radio﹣telescope searches to detect the equivalent（相等的） of the radio waves that leak from Earth into the universe， and have done for the past century．

Thinking up answers to this apparent contradiction has become something of a scientific parlour（客厅）game． Perhaps life is really very unlikely． Perhaps the priests are right： human beings were put on Earth by some creator God for His own unknown purposes， and the rest of the universe is merely background scenery． Perhaps there are plenty of aliens， but they have decided that discretion is a safer bet than gathering together． Or perhaps galactic（银河的）  society avoids communicating with Earth specifically．  One frightening idea is that technological civilizations destroy themselves before they can make their presence known． They might blow themselves up after inventing nuclear weapons （an invention that， on Earth， Fermi had been part of）， or cook themselves to death by over﹣burning fossil fuels．

In a paper published last month on arXiv， an online repository（文献库） ， a group of three astronomers at Pennsylvania State University have analyzed the history of alien hunting and come to a different conclusion． In effect， they reject one of the paradox' s main theory．  Astronomers have seen no sign of aliens， argue Jason Wright and his colleagues， because they have not been looking hard enough．

1.What is the Fermi Paradox？

A. The law of universe supported the appearance of aliens but we never see any．

B. A theory about whether aliens exist on the earth and why we can't see them．

C. Fermi thought that aliens never existed because it was completely a paradox．

D. Fermi concluded that aliens did exist but they could not be seen by humans．

2.What can we conclude from the second paragraph？

A. The universe doesn't provide the abundance of creation of life．

B. Fermi thought aliens never visited the earth in the history of human．

C. The inability of radio﹣telescope may result in the failure of finding aliens．

D. The civilizations on the earth have been detected by aliens in the universe．

3.What does the word underlined in the third paragraph mean？

A. Getting together．

B. Fighting each other．

C. Hating each other．

D. Living separately．

4.How do Jason Wright and his colleagues find the Fermi Paradox？

A. They firmly believe that it is out of date．

B. They actually doubt the base of the paradox．

C. They want to prove that it is completely right．

D. They conclude that aliens actually never exist．