(2019·福州四校联考)Have you ever felt so tired after staying up for a night that even coffee doesn't give you the energy that you need？You may have an energy drink，but the benefits of drinking one are heavily outweighed by the risks.
In the past years，more and more studies have found the deadly effects of energy drinks on your bodies.The sugar，caffeine and energy supplements(添加物) in energy drinks make up a deadly mixture of ingredients that can affect your heart function and send you to the hospital!
A study by the University of Bonn，Germany found that frequent consumption of energy drinks can greatly change the way your heart functions.The study went on to say that consuming energy drinks often causes significantly increased heart contractions(收缩) in adults，which has the potential of putting you at risk of irregular heartbeats.
It is possible that many people are unaware of the alarming side effects of energy drinks because of the way they are labelled.Most energy drinks contain between 80 milligrams to over 350 milligrams of caffeine，sugar and energy supplements.When an energy drink is marketed as a diet supplement it may be distributed without a“nutrition facts”label，which would show the harmful supplements that are in the drink.However，even if energy drinks are Food and Drug Administration(FDA) approved，they don't have to show the number of supplements.
Energy drinks may be widely available but they aren't the healthiest or safest choice for your body.Stay naturally energized，get organized and stay on top of your work so that you don't have to stay up all night to complete assigned tasks.If you'd like a natural energy boost，you could make time for a short workout，which will give you all of the energy you need!
【语篇解读】 本文是一篇议论文，主要论述了能量饮料带给人们的害处大于益处。
1．Which of the following is the side effect of the energy drinks?
A．Making people thinner.
B．Making people's heart bigger.
C．Making people run a risk of falling ill.
D．Making people suffer from heart attacks.
C [推理判断题。根据第二段第二句“The sugar，caffeine and energy supplements(添加物) in energy drinks make up a deadly mixture of ingredients that can affect your heart function and send you to the hospital”可知，能量饮料中的糖、咖啡因和能量添加物合起来构成有危害的成分混合物，影响你的心脏功能且对身体有害，所以能量饮料的副作用是会使人们有生病的风险。]
2．Why are many people unaware of the harmful effects of energy drinks?
A．Because the harmful materials are not labelled.
B．Because FDA thinks they are healthy drinks.
C．Because they don't read the label carefully.
D．Because factories of energy drinks lie to drinkers.
A [细节理解题。根据第四段第一句“It is possible that many people are unaware of the alarming side effects of energy drinks because of the way they are labelled”可知，人们没有意识到能量饮料的副作用的原因是有害物质没有被标明。]
3．What is the last paragraph mainly about?
A．The effects of energy drinks.
B．The benefits of doing exercise.
C．The better choice of right drinks.
D．The way to have enough energy.
D [段落大意题。根据最后一段最后一句“If you'd like a natural energy boost，you could make time for a short workout，which will give you all of the energy you need”可知，该段主要讲获得足够能量的方法。]
4．What is the main idea of the text?
A．Don't drink energy drinks.
B．Many people enjoy energy drinks.
C．The materials that energy drinks contain are harmless.
D．Energy drinks could send you to hospital.
D [主旨大意题。根据全文内容，尤其是第一段中的“You may have an energy drink，but the benefits of drinking one are heavily outweighed by the risks”及最后一段“Energy drinks may be widely available but they aren't the healthiest or safest choice for your body”可知，本文讲了能量饮料的害处大于益处，且没有完全否定能量饮料，故排除A项，选D项。]
