根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Trees are one of the oldest living things on earth .They play a very important role for human’s existence. Trees are important for life as they provide food and oxygen. The importance of tree continues to increase and more benefits of trees are being discovered as their role expands to satisfy the needs created by our modern lifestyles. The forests and trees that are planted by humans work together with us to make the world look better and more beautiful. __71____Some of them are as follows.

Trees can clean soil and control soil erosion. Poisonous chemicals and pollutants from various factories enter into the soil, thus causing soil pollution.___72____Soil erosion is a serious problem that causes degradation(退化)of soil and leads to floods. Trees and plant roots bind the soil and thus reduce soil erosion. Also they conserve rainwater and reduce sediment(沉积)deposits.

Trees produce oxygen . Trees play an important role in reducing the greenhouse gases. They consume carbon dioxide and produce oxygen.___73____A fully grown tree produces oxygen which is sufficient for10 people for a complete year. Also, they act as filters of the air that we breathe.

Trees are of commercial importance. Trees fulfill the need of fuel for cooking in many areas around the world. Trees also provide timber for furniture and hundreds of household items. Wood pulp is used for making paper in industries.____74____Some trees are even used to make medicines.

____75____They provide shelter and food for a number of animal species across the globe. Trees are especially important as they form green corridors connecting habitats with each other and with the countryside beyond.

A This lowers global warming.

B Trees have beautified our planet.

C Trees act as the habitat for wild animals.

D In face, trees play different roles in our environment.

E Without trees our planet cannot be considered a place for living.

F Also, trees produce a number of fruits and nuts which are sold at market.

G Trees have the ability to store them or change them into less harmful forms.

第四部分 写作 (共两节，满分35分)

第一节 短文改错(共10小题;每小题1分，满分10分)

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。错误涉及一个单词的增加，删除或修改。按下列情况改正：

删除：把多余的词用斜线(﹨)划掉。

增加：在缺词处加一个漏字符号(∧)，写出该加的词。

修改：在错的词下划一横线，写出改正后的词。

注意：每处错误及其修改均仅限一词;只允许修改10处，多者(从第11处起)不计分。

Bill worked in big office,and he usually went to the barber’s during working hours to have his hair cut. This against the rules: office workers had to have his hair cut in their own time. While Bill was at the barber’s on one day, the manager of the office entered in to have his own hair cut. Bill saw him and managed to hide his face. But the manager sat besides him, and soon recognized him.“Hello, Bill,” said the manager,“I know you are having your haircut.”“Yes, sir, I do,” said Bill.“You see, sir, it grows in office time.“Not all of it,”said the manager at once.“Some grows in your own time.”“Yes, sir, that’s quite true,” answered Bill polite,“but I’m not having it all cut off.”

第二节 书面表达 (满分25分)

人们对于学生网上交友持不同意见。请你用英语写一篇关于学生网上交友的短文，介绍人们的不同观点，并表达自己的看法。

赞成的理由 反对的理由 你的看法

1、广交朋友

2、可自由表达思想

3、利于外语学习 1、浪费时间

2、影响学习

3、可能上当受骗

注意：1、文章必须包括表中的全部内容，可适当增加细节，以使行文连贯;

2、词数：120左右;

3、参考词汇：网络朋友on-line friend(s);上当受骗to be cheated。

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