They say there are three ways to experience the Grand Canyon, on foot,on mules(骡子)or by air. We chose the first. Up early,my husband and I and our three children couldn't wait to get started. We decided to walk along a lovely path named Bright Angel Trail.

  As we set out,I was shocked at how narrow the path was. And I couldn't help noticing that the other tourists weren't like us. They had heavy backpacks, water bottles, and hats. But as usual we were dressed. As the sun rose higher, Arizona's famous heat seemed to roast(烘烤) us. There was no shade and our legs were aching. We decided to go back,with the girl on my back and the boys far behind. By the time we finally got back,our legs were like jelly.

  The next day,after we'd had a long rest and a good breakfast, we were ready for another view of the Canyon―by air. After our last walk,this would be the easiest thing in the world.

  We called to each other excitedly as the plane took off and circled around the Canyon. But the smiles on our faces disappeared as the pilot tossed(翻转)the plane around,pretending he was going to hit the ground. I shouted, "STOP,TAKE US BACK!" When we finally arrived back on land,once again our legs were like jelly. We hardly spoke as we drove back.

  As I said,there are three ways to view the Grand Canyon. We never tried the mules, but personally I'd suggest a fourth:buy yourself a good magazine like National Geographic. That way,you can see the Canyon, without fear or tiredness. 

(   ) 5. Which of the following is true according to the second paragraph?

A.     They made a careful preparation before the trip.

B.     The children were more joyful than their parents.

C.     Bright Angel Trail was not as lovely as they expected.

D.     Arizona's heat is one of the attractions to the tourists.

(   ) 6. The underlined expression "our legs were like jelly" probably means      

A. we were weak           B. we were unhappy

C. we were dissatisfied    D. we were disappointed

(   ) 7. Which of the following best describes their Canyon trip by air?

A. It proved to be frightening. B. It was more comfortable.

C. It turned out to be exciting. D. It made each of them tired.
(   ) 8. We can infer from the passage that      

A.     experiencing the Canyon on mules would be the best way

B.     one needs to dress less when visiting the Grand Canyon

C.     the writer was not serious when she made the decisions

D.     the whole family narrowly escaped from the air accident

 The Olympic Games are seen as the greatest test of an athlete's ability and are supposed to celebrate the spirit of fair play. But in fact,sportsmen have been using drugs to cheat their way to victory since the Games first began.

  In the early years,athletes ate mushrooms(蘑菇)and plant seeds to improve their perform?ance. Nowadays, this kind of cheating has a name—doping(用兴奋剂).

  Just last month,Britain's top sprinter(赛跑选手)Dwain Chambers and several American athletes tested positive(呈阳性) for the drug THG. Until a coach secretly gave a sample of THG to scientists,no one knew how to test for it.

  "We're like cops(警察)chasing criminals―athletes are always adapting and looking for ar?eas we haven't investigated," said Jacquew de Ceaurriz, a French anti-doping expert.

  Since the first drugs test was carried out at the 1968 Olympics in Mexico City,many cheats have been caught out. The most famous case in history is that of Canadian sprinter Ben John?son.

  He broke the 100 meters world record in winning gold at the 1988 Seoul(汉城)Olympics. But days later, he tested positive for drug use,lost his gold medal and was banned from the sport. Five years later, he returned to action―only to be found positive again and banned forever.

  China has also had problems with drug cheats. At the 1994 Asian Games, 11 Chinese ath?letes―seven of them swimmers―tested positive for banned drugs. Sports organizations prom?ised that cheating on this scale would not happen again.

  Experts are also worried that doping can damage a person's health. It is believed to increase the risk of liver and kidney(肝肾)diseases, and women may experience reproductive(生育) problems. As long as they can stay ahead of the scientists, it is unlikely the cheats will stop. But experts say there is a limit to what can be achieved and that athletes will not be able to change their bodies using gene(基因)technology.

  "For the moment? genetic doping does not exist," said de Ceaurriz. "Even in 10 or 15 years it will not be done easily―the scientific community will not let it happen." 

(   ) 5. Which of the following is NOT the way that some athletes cheat to their better sports achievements?

A. Eating mushrooms. B. Taking drug THG.

C. Taking genetic doping. D. Eating plant seeds.

(   ) 6. How many countries are mentioned in the passage in which there were athletes doping?

A. Two. B. Four. C. Six. D. Eight.

(   ) 7. We can infer from the passage that      

A.     scientists get a lot of information about drug before the athletes take doping

B.     taking doping will never happen again because of the serious test

C.     few athletes used drug cheats before the first drug test was carried out at the 1968 Olympics

D. problems with drug cheats are still serious though they are severely tested
(   ) 8. Which statement of the following is true?

A.     Many police are sent to chase criminals of taking doping during the Olympic Games.

B.     The drug test was carried out until the 1968 Olympics.

C.     There is the possibility that women athletes taking doping will give no birth to a child.

D.     Ben Johnson was banned from sports forever for being tested positive for drug use at the 1988 Seoul Olympics.

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