Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly. The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms.

Certain microorganisms(微生物)cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release(释放)poisons that make people sick.

Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.

Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms.

When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.

Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.

67. Which of the following statements is NOT true?

A. Food when poisoned can make people sick.   

B. Food poisoning means death.

C. Food poisoning comes in varieties.           

D. Food poisoning can be serious.

68. Food poisoning can be caused by all the following EXCEPT ________.

A. some chemicals            B. low temperatures

C. some tiny living things      D. certain natural materials

69. From Paragraph 5,we can learn that ______________.

A. mushrooms should not be eaten      

B. vegetables are safer than meat and seafood

　　C. natural poisons are more dangerous than chemicals

　　D. different types of food should be handled differently

70. It can be inferred from the passage that____________ .

　　A. natural materials are safe in food processing

　　B. chemicals are needed in food processing

　　C. food poisoning can be kept under control

　　D. food poisoning is out of control

C

In 1879, a group of explorers made an incredible find. They discovered paintings of remarkable beauty on the walls of a cave in Spain. Some scientists believed that these paintings were created by early humans from the Stone Age, between ten and thirty thousand years ago. Other scientists and the public did not believe the claim, but over the years, it was proven correct. Our ancestors had incredible artistic talents.

Most of the cave art that has been discovered has been found in Spain and France. A smaller number of such caves are located in Italy, Portugal, Russia, and other countries. Scientists believe that many more caves will be discovered in the coming years, and are concentrating their efforts on Africa and the area between Europe and Asia. These two regions of the world were, populated first by humans.

Cave art was carved or painted on the walls and roofs of caves, usually near the entrance. The entrance area was probably chosen to take advantage of daylight and to allow many people to view the paintings. In some cases, the art appears much deeper in caves and requires artificial light. Evidence suggests that the artists used torches or shallow bowls in which animal fat was burned.

9.What was the response of general public to the discovery of cave art made by Stone Age people?

A. They believed it at first.

B. They did not believe it.

C. They thought it was beautiful.

D. They ignored it.

10.According to the passage, what can we conclude about animal fat?

A. It does not burn.

B. Stone Age artists used it to preserve their paintings.

C. It can be burned to produce light.

D. Stone Age artists mixed it with their food.

11.. Where do scientists expect to find more cave paintings?

A. In Central and South America.

B. In Spain and France.

C. In the places where there are caves with large openings.

D. In the regions of the world first populated by humans.

12.Where would this passage be most likely to appear?

A. In a textbook about early human history.

B. In a textbook about modern art.

C. In a dictionary.

D. In an encyclopedia entry about caves.

D

When I was growing up, I was embarrassed to be seen with my father. He was badly crippled (跛脚), and when we would walk together, his hand on my arm for balance, people would stare, I would be ashamed of the unwanted attention. If ever noticed or bothered, he never let on.

It was difficult to walk together—and because of that, we didn’t say much as we went along. But as we started out, he always said, “You set the pace. I will try to follow you.”

Our usual walk was to or from the subway, which was how he got to work. He went to work sick, and even in bad weather. He almost never missed a day, and would make it to the office even if others could not. It was a matter of pride for him.

When snow or ice was on the ground, it was impossible for him to walk, even with help... Such times my sister or I would pull him through the streets of Brooklyn, N.Y., on a child’s sleigh to the subway entrance. Once there, he would try to grasp handrail until he reached the lower steps that the warmer tunnel air kept ice free. In Manhattan the subway station was the basement of his office building, and he would not have to go outside again until we met him in Brooklyn on his way home.

When I think of it now, I am surprised at how much courage it must have taken for a grown man to suffer from shame and disability. And I am also surprised at how he did it—without bitterness or complaint.

He never talked about himself as an object of pity, not did he show any envy of the more fortunate or able. What he looked for in others was a “good heart”, and if he found one, the owner was good enough for him.

Now that I am older, I believe that is a proper standard by which to judge people, even though I still don’t know exactly what a “good heart” is. But I know the times I don’t have one myself.

He has been away for many years now, but I think of him often. I wonder if he sensed my reluctance to be seen with him during our walks. If he did, I am sorry I never told him how sorry I was, how unworthy I was, how I regretted it. I think of him when I complain about my troubles, when I am envious of another’s good fortune, when I don’t have a “good heart”.

17. How did the man treat his father when he was young?

A. He helped his father happily.

B. He never helped his father.

C. He helped his father, but not very happily.

D. He only helped his father take a walk after supper.

18. As a disabled man, his father____.

A. didn’t work very hard

B. didn’t go to work from time to time

C. hated those who had good fortune

D. was happy and satisfied, and never lost hope

19. What does the underlined word “reluctance” mean in the article? It means ____.

A. anger                     B. sadness            C. happiness                D. unwillingness

20. How did the father get to work usually?

A. By subway.              B. By bus.            C. By wheelchair.         D. By bike.

——May I borrow your car, Jack?

   ——Sorry, it’s ____ this moment.

A. in use          B. out of use        C. of use        D. of no use

Many teenagers in China are accustomed to ______ after, ______ for granted everything their parents do.

   A. being looked; taking  B. looked; taking  C. being looked; took  D. looking; taking

When he knew the disappointing result of the exam, he seemed quite ____.

A. cast down            B. of caution            C. in vain                   D. in good condition

．In front of the house     with a history of 100 years.

     A．does a tall stand            B．stands a tall tree

C．a tall tree is standing        D．a tall tree stands

Each year, road accidents kill a million people and injure millions more . The economic costs are greatest for developing countries . Earlier this year , the United Nations called for a campaign to improve road safety .

     One way to avoid accidents is better driving . Another is better roads and bridges . Engineers in the Unites States have designed ten new concrete mixtures that they think could make bridges last longer .

     Professor Paul Tikalsky leads the experiments by a team at Pennsylvania State University . He says bridges made of concrete now last about twenty-five to thirty-five years . But he says the new mixtures might extend that to seventy –five or even one-hundred years .

     Concrete is made of stone , sand , water and cement(水泥). The materials in the cement hold the concrete together . Ancient Romans built with concrete . Yet strengthened concrete bridges did not appear until the late 1800s . People keep looking for new ways to improve concrete . Professor Tikalsky says it is one of the most complex of all chemical systems .

     The new mixtures designed by his team contain industrial waste products . He says these make the concrete better able to resist damage from water and salt over time . One of the products is fly ash . This is released into the air as pollution when coal is burned .

     Professor Tikalsky says particles (颗粒)of fly ash are almost exactly the same size and chemical structure as Portland cement . This is the most costly material in concrete . So using fly ash to replace some of it would save money .

     The federal government is paying for part of the research . Engineers anywhere can use the technology . Professor Tikalsky says some of the ideas have already been put to use in China , the Philippines and other countries .

Why did the United Nations launch the campaign ?

  A. Because the United Nations wanted to reduce road accidents and economic costs

  B. Because two million people were killed in the accidents .

  C. Because engineers wanted to design ten new concrete mixtures .

  D. Because the United Nations made bridges of the new mixtures which could last for about 20 to 35

   years .

What does the underlined word “ this ” in the sixth paragraph refer to ?

  A. Fly ash      B. Portland cement      C. Sand       D. Chemical

Which of the following statements is TRUE ?

  A. Ten new concrete bridges have already been built in the United States .

  B. A new concrete bridge could last 50 more years than an ordinary concrete one .

  C. People didn’t know how to build with cement until the late 1800s .

  D. Water and salt won’t do any damage to bridges over time .

What does the passage mainly tell us ?

  A. The causes of road accidents .             B. The advantages of fly ash

  C. The measures of avoiding road accidents    D. Latest information about long-life concrete bridges

（2010·黑龙江哈三中高三10月月考）   21. ---Mum, what are you getting me for my birthday?

---_________---you’ll have to wait and see.

A. I think so                 B. I’ll tell you what     

C. I wouldn’t say no          D. I’m not telling you

（2010·湖南桃源一中高三10月月考）   29. We were stopped by the security guard and told that only when we showed our licenses_________.

A. we could be allowed in               B. we could allowed in       

C. could we be allowed in               D. could we allow in