But after a careful check you may find that most energy drinks contain high levels of caffeine. These drinks are typically aimed at young people, students, busy people and sports players.

　　Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much.

　　Caffeine raises your heartbeat. Because of this, the International Olympic Committee has limited their use. The amount of caffeine in most energy drinks is at least as high as in a strong cup of coffee or strong tea.

　　Research by Australian scientists has found that many teenagers are affected by caffeine. The results of their survey show that 27 percent of boys aged 8-12 take in more caffeine than their parents.

　　There are potential health risks linked to energy drinks. Just one can of energy drink can make you nervous, have difficulty sleeping and can even cause heart attacks.

　　58. Generally, people would like to

　　.

　　A. take vitamins B. eat ginseng

　　C. have a cold drink

　　D. have a meal

　　59. The International Olympic Committee limit the use of caffeine because

　　.

　　A. it makes you better at sports

　　B. it can keep you awake

　　C. it can make you nervous

　　D. it make your heart beat fast

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