當(dāng)前位置：外研版（2019）必修第二冊《Unit 1 Food for thought》2023年同步練習(xí)卷> 試題詳情

You may have heard adults say they are uncomfortable in the morning without a cup of coffee.One reason they may feel that way is that coffee contains caffeine（咖啡因），Caffeine appears naturally in coffee，tea，and cocoa beans，which are used to make chocolate.But now food makers are adding it to many products，from potato chips to water.
   The US government is especially worried about the problem.That's why the Food and Drug Administration（FDA）is studying the health effects of caffeine on young people.Studies show that too much caffeine can make people nervous and unable to sleep.What's more，caffeine is habit-forming.Those who consume it regularly and stop suddenly may experience headaches and feel tired.
   One of the biggest concerns is the large amount of caffeine added to so-called energy drinks，like Red Bull.A 12-ounce can of cola has about 35 milligrams of caffeine.A similar serving of Red Bull contains more than three times that amount.
   The Institute of Medicine is also working on caffeine-safety measures."Teenagers should not drink beverages that contain caffeine.They should be aware of caffeine's effects on health and on how the brain works.Take，for example，teenagers who consume caffeine to stay awake and study for a test.They will remember less of what they just studied，"said Stallings，a member of the institute.
   Companies that make products with added caffeine claim they do not advertise them to kids.However，there is no law to stop children from buying them.So the FDA needs to set limits on caffeine，especially in energy drinks.As for added caffeine in foods，the government should just say no.If not，the amount of caffeine should be printed on food labels to remind consumers.The government must do that.
   Doctors say kids should avoid caffeine.If you need extra energy，try these natural boosters：eat right，exercise.and get plenty of sleep.

（1）What is the US government particularly concerned about？
B
B

A．The fact that coffee contains caffeine.
B．The practice of adding caffeine to foods.
C．The measures of avoiding caffeine's effects.
D．The practice of using caffeine to make chocolate.
（2）Red Bull is listed in the third paragraph as an example of
C
C
.
A．caffeine's effects on health
B．teenagers'addiction to caffeine
C．drinks which contain much caffeine
D．people's concern about teenagers'health
（3）Paragraph 5 is mainly about
A
A
.
A．the measures of protecting teenagers from caffeine's effects
B．the process of the government's controlling the use of caffeine
C．the government's responsibility of taking care of teenagers
D．the risk of buying products containing caffeine nowadays
（4）The author may agree that
D
D
.
A．headaches and feeling tired are common in teenagers
B．food makers don't add much caffeine to many products now
C．caffeine is good and useful for teenagers' study
D．getting enough sleep can make people energetic

【考點】說明文．

【答案】B；C；A；D

【解答】

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發(fā)布：2024/10/17 0:0:1組卷：8引用：2難度：0.4

相似題

1．Suppose you are out shopping and come across an old friend who starts telling you a story that seems to be dragging on and on.You want to seem interested，so you offer the occasional "Oh" or "I see".To your surprise，though，this person angrily stops and says， "Sorry if I'm boring you!"
   Where did this come from？Clearly，your body language must have let out your inner feelings.The idea that verbal （口頭的） and nonverbal messages can conflict was the inspiration for a recently published study from Yale University's Lueylle Armentano.
   To test the role of verbal-nonverbal mismatch on emotional communication，Armentano and her partner created experimental conditions to see what happens when someone asks for help from strangers.The research team created videotapes of a fellow Yale student expressing nervousness in his words，bodily gestures，or both.The bodily gestures included running his hands through his hair，grabbing his arm，and facially expressing uneasiness.The key question was whether the other participants，another 82 Yale students，would believe the student and provide the help he was requesting.They needed to give their responses.
   Turning to the findings，those nonverbal cues （提示） of nervousness had a greater impact on helping behavior than the verbal cues.Surprisingly，helping behavior was the highest when verbal expressions of nervousness were low but nonverbal cues were high.
   Recognizing that your body language can outweigh your words means that you need to be mindful of what your body is doing when you're interacting with others.Generally，when someone is speaking to you，you want to look like you're interested.Not only should you maintain eye contact，but you should keep your body still and face toward the other person.

（1）What is the main idea of paragraph 1？

A．The obvious advantages of body language.
B．The proper way to interact with old friends.
C．A situation where body language is necessary.
D．An example of the conflict of verbal and nonverbal messages.
（2）What was the task of the 82 Yale students ？

A．Try to win the nervous student's trust.
B．Respond to the nervous student's request.
C．Identify the types of body language.
D．Express nervousness in their words.
（3）What would probably win kindness from strangers？

A．Nonverbal cues of nervousness
B．Good manners in front of others.
C．Sincere verbal expressions.
D．Positive attitude to nervousness.
（4）What is the purpose of the writer in the last paragraph？

A．Give some warnings.
B．Present some facts.
C．Offer suggestions.
D．Make a prediction
發(fā)布：2024/11/15 3:0:1組卷：3引用：2難度：0.5
解析
2．Animals are natural resources that people have wasted all through our history.
   Animals have been killed for their fur and feathers，for food，for sport，and simply because they were in the way.Thousands of kinds of animals have disappeared from the earth forever.Hundreds more are on the danger list today.About 170 kinds in the United States alone are considered in danger.
   Why should people care？Because we need animals.And because once they are gone，there will never be any more.
   Animals are more than beautiful or interesting or a source of food.Every animal has its place in the balance of nature.Destroying one kind of animal can create many problems.
   For example，when farmers killed large numbers of hawks（鷹），the farmers' stores of corn and grain were destroyed by mice.Why？Because hawks eat mice．With no hawks to keep down their numbers，the mice multiplied quickly.
   Luckily，some people are working to help save the animals.Some groups raise money to let people know about the problem.And they try to get the governments to pass laws protecting animals in danger.
   Quite a few countries have passed laws.These laws forbid the killing of any animal or plant on the danger list.Slowly，the number of some animals in danger is growing.

（1）What is the best title for the passage？

A．Save the Animals
B．Useful Animals
C．Laws for Animals
D．Animals in Danger
（2）Animals are important to us mainly because

.
A．they give us a source of food
B．they are beautiful and lovely
C．they keep the balance of nature
D．they give us a lot of pleasure
（3）What is the meaning of the underlined word "multiplied" in the passage？

A．Became more.
B．Became less.
C．Turned black.
D．Ate food.
（4）We can infer from the passage that

.
A．people have known the importance of animal protection since a long time ago
B．a(chǎn)nimals play an important role in people's life
C．the number of hawks is on the decrease
D．many countries passed laws forbidding the killing of any animal
發(fā)布：2024/11/15 4:0:1組卷：10引用：2難度：0.5
解析

3．Why Experiencing a New Culture Is Good for You Often the best way to really explore a new place and culture is by spending abundant time there.A quick vacation may give you a glimpse（警） into your destination. （1）

.These opportunities provide a support network as you adjust to new surroundings.
   Dealing with culture shock
   Culture shock is a response to your new surroundings when abroad that can leave you confused，anxious and feeling lonely.It generally includes frustration at how even the simplest things can be different in the new culture.The thing is though，culture shock can be seen as a problem but also as an opportunity. （2）

.
   （3）

   Perhaps the most obvious lesson learned with travel is the importance of language.Even just learning the basics of the local language can make getting about and making new friends easier.Trying to overcome the language barrier also teaches you about non-verbal communication.Since you can't rely on what is being said，you learn to adapt，to people's tone and body language.This makes you a better communicator.
   Finding inspiration
   （4）

.In each of these creative fields you may come across new approaches or elements that you bring home with you；maybe it's a certain combination of ingredients that you add to your cooking or a new style you adopt for your own home's design.
   Meeting new people
   Meeting people and making friends while overseas is both a necessity and one of the most enjoyable aspects of the experience. （5）

，which enables you to meet people that you never would have known otherwise.You may be exposed to people from different walks of life，find a similar spirit，or both at the same time.

A．Learning language skills
B．Developing body language
C．So you're less likely to further experience a new culture
D．Travelling to new cultures is a great way to expand your social circle
E．Experiencing the local culture can expose you to local art，cuisine，architecture，etc.
F．Only by adjusting to and accepting new surroundings can you understand and appreciate it
G．But experiences like student or work exchange programs allow you to immerse（沉浸） in a new culture

發(fā)布：2024/11/15 5:0:1組卷：5引用：3難度：0.5

解析

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