Directions: Read the following passage. Answer the questions according to the information given in the passage.

Energy drinks are now available (可购得的) in nearly every store and they promise to make people feel more energetic and think more clearly. these products have names like Red Bull , Monster, 5-Hour Energy and so on, which appeal mainly to young adults and teenagers.

Chad is a medical researcher who got interested in studying energy drinks because of the explosion (猛增) in their popularing in the last few years.He says he and his research team have found three major things about energy drinks. One: there are huandreds of brands of energy drinks in most major countries. Two: the drinks are not clearly labeled (用标签标明) with enough information such as what are contained in the drink, the date and even t names of their makers. And three: the amount of caffeine ( 加啡因) varies greatly. Some contain as little as fifty milligrams, others as much as five hundred.

Some energy drinks contain a mixture of ingredients (配料) listed as an “energy blend”. But scientists do not know a lot about them and how they interact with each other. These ingredients may be dangerous for people who drink them. What is worse , he says, there is no listing of the amount of each ingredient. Some makers of energy drinks do provide warnings. For example, a popular energy drink warns against use by people who are nursing a baby or under the age of twelve.

Chad and his team suggest labeling energy drinks with the amount of caffeine and other ingredients clearly in order to protect the health of the public. And the government officials are considering their suggestions now.

1. What do the energy drinks promise to do? (no more than 10 words)

______________________________________________________________

2. Why did Chad get interested in studying energy drinks? (no more than12 words)

_______________________________________________________________

3. Who are the main users of energy drinks? (no more than5 words)

_______________________________________________________________

4. Please explain the underlined word “interact” in English. (no more than8 words)

They promise that the work would all be finished _____ next week.

A. until                                                     B. in

C. by                                                       D. to

  They promise that the work would all be finished _____ next week.

A. until                B. in  C. by                     D. to

认真阅读下面短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。(注意：每空填1个单词。)

You could fill a store with all the energy drinks now available. They promise to make people feel more energetic and think more clearly. These products have names like Red Bull, Monster, Ripped Force, Speed Stack and 5-Hour Energy. They appeal mainly to young people and are fueled mainly by caffeine.

Chad Reissig at Johns Hopkins University in Baltimore, Maryland, is a medical researcher who studies drug dependence. He says the team he works on got interested in studying energy drinks because of the explosion in their popularity in the last few years.

He says the researchers found three major things. One: there are hundreds of brands of energy drinks in most major countries. Two: the drinks are not clearly labeled with enough information. And three: the amount of caffeine varies greatly. Some contain as little as fifty milligrams, others as much as five hundred.

By comparison, a cup of Starbucks brewed coffee contains 330 milligrams in 473 milliliters.

Some energy drinks contain a mixture of ingredients listed as an “energy blend(混合物)”. Ingredients like taurine, guarana and inositol are natural substances. But Chad Reissig says scientists do not know a lot about them and how they interact with each other and caffeine. And worse, he says, there is no listing of the amount  of each ingredient.

Some people combine energy drinks with alcohol. They think they can drink more alcohol that way and not be affected. Studies, however, suggest that they are still under the influence of the alcohol even if they do not feel that way.

Some makers of energy drinks do provide warnings. For example, a popular energy shot warns against use by people who are pregnant, nursing a baby or under the age of twelve. Energy shots are small bottles of liquid. The directions also advise people to limit caffeine products and drink only half the bottle if they want a moderate (适度的) amount of energy.

The team at Johns Hopkins University School of Medicine published a report in the journal Drug and Alcohol Dependence. They suggested better labeling with the amount of caffeine and other ingredients clearly listed on the drink. The researchers are continuing to study energy drinks. They are currently seeking young people who have had a bad experience after drinking them.