【题目】

Many Americans concerned about air pollution are demanding cleaner and cheaper supplies of energy. The demand has resulted in increased research about ethanol fuel. Ethanol is an alcohol that can be mixed with gas. It burns up most of the pollutants in gas. It replaced some of the chemicals that are known to cause cancer.

Some experts say that in the future ethanol will replace some of the oil imported into America. Today ethanol is less than one percent of the total American fuel supply. The head of the National Corn Growers Association, Kieve Hars, says ethanol will provide twenty five percent of the fuel supply by 2010. The organization is involved in the production of ethanol because it can be made from corn.

One company in American Midwest says it is starting to produce ethanol because of demands from people and from the government. The Congress approved the Clean Air Act in 1990. The company says this means the market for ethanol will expand. The company is a major producer of corn starch (淀粉) that can be used to make ethanol.

At Texas University, Professor Mark Holzapple produces ethanol from materials found in solid waste. He has developed a way to turn materials like paper into simple sugar. He then uses yeast (酵母) to turn the sugar into ethanol. Professor Holzappple says two hundred liters of ethanol fuel can be produced from one ton of solid waste.

A professor at the University of Arkansas, John Geddie, is exploring another way to make ethanol. He is using acids on paper material. He says a large factory could produce ethanol from waste paper about the same cost of that of gasoline.

Environmentalists support the use of ethanol because it turns waste into a useful product. Professor Holzapple says law makers in industrial nations need to support the development of this renewable fuel of the future.

根据上面的短文填空,一空一词。

Title: Ethanol: 【1】__________________________ and Cheap Fuel

Definition

and uses

A kind of 【2】 __________

It can be mixed with gas.

It helps remove some 【3】 _________ pollutants from gas.

It replaces some chemicals known to cause 【4】 ________.

It will take the place of 【5】 ___________________ .

Production

Ethanol

From starch

From material found in solid 【6】 _________ like paper

Opinions

The public

Demand the production and use of ethanol

The 【7】 ________________

Approve the Clean Air Act

The 【8】 ________________

Meet the expanding market

Environmentalists

【9】 __________________ the development of it

Conclusion

Ethanol, as a renewable fuel, will be produced and used more widely in the world, and it needs the support of law 【10】 ________________.

【题目】七选五

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。

体裁

话题

词数

难度

建议时间

说明

鲨鱼的习性及其对维持海洋生态平衡的重要性

249

★★☆☆☆

5分钟

Sharks have lived in the world’s oceans for millions of years. A shark has a very good sense of smell. It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals. These powerful senses help sharks find their food. 1

Sharks grow slowly. About forty percent of all sharks lay eggs. 2 Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, over-fishing of sharks is of special danger to the future of the animal.

3 They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too great. This protects the plants and other forms of life that exist in the oceans.

People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased because many parts of a shark are valuable. 4 Shark liver oil is a popular source of Vitamin. The skin of a shark can be used like leather. In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins.

Sharks are among the oldest animals on Earth. 5 If too many sharks in one area are killed, the group of sharks may never return to normal population levels.

A. The others give birth to their young.

B. Sharks are important for the world’s oceans.

C. This is a threat to other forms of life in the ocean.

D. Collectors pay thousands of dollars for the jaws of a shark.

E. But some sharks are in danger of disappearing from Earth.

F. Sharks are valuable to us and we can make full use of them.

G. Sharks eat fish, other sharks, and plants that live in the ocean.

【题目】I used to hate being called upon in class mainly because I didnt like attention drawn to myself. And 【1】 otherwise assigned(指定)a seat by the teacher, I always 【2】 to sit at the back of the classroom.

All this 【3】 after I joined a sports team. It began when a teacher suggested I try out for the basketball team. At first I thought it was a crazy 【4】 because I didnt have a good sense of balance, nor did I have the 【5】 to keep pace with the others on the team and they would tease me. But for the teacher who kept insisting on my 【6】 for it, I wouldnt have decided to give a try.

Getting up the courage to go to the tryouts was only the 【7】 of it! When I first started 【8】 the practice sessions, I didnt even know the rules of the game, much 【9】 what I was doing. Sometimes Id get 【10】 and take a shot at the wrong directionwhich made me feel really stupid. 【11】 , I wasnt the only one new at the game, so I decided to 【12】 on learning the game, do my best at each practice session, and not be too hard on myself for the things I didnt 【13】 just yet.

I practiced and practiced. Soon I knew the 【14】 and the moves. Being part of a team was fun and motivating. Very soon the competitive 【15】 in me was winning over my lack of confidence. With time, I learned how to play and made friends in the 【16】 friends who respected my efforts to work hard and be a team player. I never had so much fun!

With my 【17】 self-confidence comes more praise from teachers and classmates. I have gone from 【18】 in the back of the classroom and not wanting to call attention to myself, 【19】 raising my hand even when I sometimes wasnt and not 100 percent 【20】 I had the right answer. Now I have more self-confidence in myself.

A. as B. until C. unless D. though

A. hoped B. Agreed C. meant D. chose

A. continued B. changed C. settled D. started

A. idea B. plan C.belief D. saying

A. right B. chance C. ability D.patience

A. going B. looking C. cheering D. applying

A. point B. half C. rest D. basis

A. enjoying B. preparing C. attending D. watching

A. less B. later C. worse D. further

A. committed B. motivated C. embarrassed D. Confused

A. Interestingly B. Fortunately C. Obviously D. hopefully

A. focus B. act C. rely D. try

A. want B. do C. support D. know

A. steps B. orders C. rules D. games

A. roles B. part C. mind D. value

A. process B. operation C. movement D. situation

A. expressed B. improved C. preserved D. recognized

A. dreaming B. playing C. relaxing D. hiding

A. by B. for C. with D. to

A. lucky B. happy C. sure D. satisfied

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