阅读下面的短文，在标有序号的空白处填入一个适当的词或用括号中词的适当形式填空。

The skin is  1.    essential part of your body and its largest organ. You have three

 l 2.   of skin which act as a barrier　3.　disease , poisons and the sun’s harmful rays. The functions of your skin are also very 4.　: it keeps you warm or cool; it5.　your body from losing too much water; it is __6.__ you feel cold , heat or pain and it gives you your 7.　of touch. So as you can imagine, if your skin gets _8.__  it can be very serious. First aid is a very important 9.　step in the treatment of burns . You can get burned by a variety of things. There are three types of burns, 10. (depend) on which layers of the skin are burned.

第三节：完形填空（共20小题，每小题1.5分，满分30分）
阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中，选出最佳选项。
The climate will be warm and __21___ with prolonged droughts in most of the world’s grain growing ___22__. Because of the increase in temperature, the ice cap will begin to melt and sea level is predicted to __23___ about ten meters, causing flood in many areas.
In the atmosphere, a concentration of carbon dioxide acts like the _24__ in the roof of a greenhouse. It allows the sun’s rays to pass _25___ easily on the way to the earth’s _26__, but prevents heat _27__ by the earth from escaping back into space. __28__, as the level of atmospheric carbon dioxide rises,because of the industrial burning of fossil fuels, this greenhouse effect could __29__ the temperature of the earth. The burning of fossil fuels __30__ carbon dioxide. Carbon dioxide accumulates(积聚) in the atmosphere, and __31_ the greenhouse effect, the temperature of the earth’s surface could rise. __32__ this warming up took place, the polar ice caps would begin to melt,__33__raising sea level. The __34__ influence that seems to be cooling the earth is the variable behavior of the sun. As the sun rotates(旋转) on its orbit, it presents hotter or colder faces to the earth, and this seems to have a considerable effect __35__ the distribution of the earth’s atmospheric pressure and on the wind circulation. The heat __36__ of the sun also varied, the latest trend being __37__, the heat output appears to be decreasing and the indications are that the earth’s __38_ is entering a cooler cycle. Scientific models that take __39__ account this __40__ behavior of the sun are also predicting that the world should be entering a new Ice Age. 
21. A. wet           B. rainy               C. dry                 D. icy
22. A. farms               B. regions              C. towns               D. villages
23. A. rise             B. appear                 C. move              D. raise
24. A. glass            B. shylight(天窗)     C. chimney       D. attic(顶楼)
25. A. by              B. over                    C. in                    D. through
26. A. ground        B. bottom                C. floor              D. surface
27. A. taken in      B. sent out                    C. admitted to     D. taken out
28. A. However     B. Yet                    C. Afterwards        D. Therefore
29. A. benefit               B. forbid                  C. raise             D. effect
30. A. leads to     B. gives off              C. results from      D. joins hands
31. A. as to           B. as for                         C. without         D. because of
32. A. Whether      B. Before                   C. If                   D. After
33. A. so             B. instead                    C. thus            D. but
34. A. natural      B. unusual              C. former                     D. ordinary
35. A. in                      B. on                         C. over                 D. at
36. A. input           B. activity              C. output           D. movement
37. A. downward        B. upward                    C. forward          D. onward
38. A. pressure    B. surface              C. climate         D. appearance
39. A. from         B. into                   C. in                   D. on
40. A. unbelievable B. dull                         C. variable         D. hidden

We all know that if we want to keep our body in good shape we have to do physical exercise regularly as well as be careful with what we eat. What we tend to forget is that this goes for our eyes as well. Medical science confirms that a diet rich in carotenoids (类胡萝卜素) can help maintain good vision(维持好视力) and prevent against a number of eye diseases. Here's some advice about how to choose the right diet to keep your eyes healthy.
— Eat orange food. Fruits and vegetables with orange flesh are rich in carotenoids. In addition to carrots，oranges，pumpkins and sweet potatoes are also available. All of these contain high levels of carotenoids，which help to maintain good vision.
— Include dark green vegetables，such as spinach (菠菜) and broccoli (西兰花) in your diet, to act as natural sunglasses. Recent scientific studies have shown that these vegetables can help block (阻挡) the damaging UV radiation(紫外线辐射)from the sun's rays.
— Prevent some eye diseases with orange juice, yellow corn, whole milk, nuts and leafy vegetables. These foods are good sources of vitamins A, C, D and E. All of these are  necessary to good eye health.
— Increase your intake of omega­3 with some sea fish, and some other seafood. Omega­3 helps build cell walls and is especially beneficial to keeping eyes healthy .It also helps regulate the eye's internal pressure and helps the eye dry up excess fluid.
【小题1】We can learn from the first paragraph that healthy food　　　　.

For many years, enironmental problems have been a major concern to people. Almost all things are related to the word “Green”, say, green buildings. A green building means not only the colour of the paint. Also, it also refers to environmentally friendly houses, factories and offices.

Green building means “reducing the impact（影响）of the building on the land”, Taryn Holowka of the US Green Building Council in Washington.D.C. said. According to Holowka, buildings account for 65 percent of total US electricity use.

But green buildings can reduce energy and water use. Also, the buildings are often located near public transportation such as buses and subways, so that people can drive their cars less. That could be good for the environment, because cars use lots of gas and give off pollution. Green buildings are often built on developed land, so that the buildings don’t destroy forests.

Marty Dettling is project manager for a building that put these ideas into action. The Solaire has been called the country’s first green high-rise building. According to Dettling, “We’ve reduced our energy use by one-third and our water by 50 percent.”

The Solaire cuts energy in part by using solar power. “On the surface of the building we have solar panels（电池板）which change the sun’s energy into electricity,” Dettling explained.

The Solaire also has lights that automatically turn off when people leave the room. In addition, the building has lots of windows, allowing people to use the sun for light during the day. The Solaire cuts water by reusing it.

Not everyone is eager to move into a green building, however. Some people think that things like solar panels cost more money than more traditional energy source. Anyhow, Holowka said, “It is going to take off.”

“A green building”most refers to a____________ building according to the passage.

A. not ripe or modern          B. covering green color  

C. environmentally friendly     D. fresh or new

All of the following are the reasons why green buildings are environmentally friendly except that_______.

A. they can reduce energy and water use in many ways

B. they are often built on an area of land which has already been used for buildings.

C. people can collect energy from sunsight to heat water and produce electricity

D. they are equipped with lots of modern but cheaper equipment

According to the passage, green buildings don‘t usually stand on faraway and inconvenient areas bacause________.

A. the places will cause a lot of trouble and inconvenience to consruction work

B. cars will give off more pollution and more forests will be destroyed

C. the environment of the places is not better than that of big cities

D. the places are poorly equipped and unfriendly.

The underlined sentence “It is going to take off” in the last paragraph most probably means that green buildings__________.

   A. will become successful and popular very quickly 

   B. will be begining to disappear

   C. will be more modern.

   D. will replace traditional buildings.

The text mainly deals with the topic that_______.

   A. Dettling designed the first green building in the US.

   B. Energy shortage calls for buildings of new design

   C. The Solaire serves as a model of high buildings.  

   D. Green buildings help save environment.