As a kid,I can remember going to the supermarket and grabbing eggs off the shelf. I would run them home to my mother because they were usually going into a delicious cake. Times have changed. Cage-free? Organic? Brown? White? Omega-3s(—种脂肪酸)?Help!Here are some tips to help you figure out which eggs you should be eating.

Brown or white? In fact,color is simply a sign of the breed of hen. Find the freshest egg with the most flavor and let color be a secondary concern.

  Extra Omega-3s? Omega-3 eggs come from a hen whose diet has added flaxseed (亚麻籽), which produces an egg containing an average of 225 mg of Omega-3 fatty acids and vitamin E. The countless health benefits for humans make these eggs an attractive purchase. My opinion? Eat a piece of fresh fish and get a pure pill of Omega-3s. Let eggs be eggs. .

  Does your egg need exercise? Free-range eggs are from hens raised without the limit of a cage,though they may or may not have spent much time outdoors. Organic eggs are from hens whose food must meet organic standards. These hens must be raised humanly, and they must be given time to the outdoors. Hey,happier hens do lay tastier eggs.

Does local make a difference? Nothing is better than local eggs. They may have a feather or two stuck to them or be a little imperfect in shape and may or may not be certified organic; however, they have one quality. I know exactly where my food came from and how it came into being!In some cases I can even ask the farmer when the eggs were laid and what they were fed. 

(   ) 5. What's the best title for this passage?

A.     Which Eggs Should You Be Eating?

B.     Eggs Are Changing as Times Are Changing

C.     Which Kind of Egg Is the Best?

D.     The First Concern When Choosing Eggs

(   ) 6. What does the author think of extra Omega-3s eggs?

A.     They are a good choice for people to buy.

B.     They contain fewer Omega-3s than fresh fish.

C.     They have the highest content of pure Omega-3s.

D.     They are not the best source of Omega-3 s.

(   ) 7. The underlined word "free-range" probably means "__________________ ”.

A. wild    B. cage-free

C. organic    D. Omega-3-free

(   ) 8. According to the passage, which of the following has NOTHING to do with an egg's quality?

A.     The egg's color.

B.     The hen's exercise.

C.     The hen's living conditions.

D.     The hen's food.

 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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