组卷网 > 初中英语综合库 > 主题 > 人与社会 > 科普知识与现代技术 > 科普知识
题型:阅读理解-单选 难度:0.65 引用次数:145 题号:8929503

It is a question that has confused parents for many years: why do children refuse to eat greens?

Now, two American experts believe they have the answer.

After studying dozens of babies as they played with various objects, the researchers noted that they were far more unwilling to touch plants than other things. They believe this is because evolution (生物进化) has biologically made children be wary of plants.

Due to susceptibility (敏感性) to illness or injury in the early years of life, the body has designed an inner defence mechanism (内部保护机制) that limits a child’ s contact with plants, they think. The researchers believe this is why children turn their noses up when faced with a plate of broad beans.

The findings are published in a paper by Dr. Annie E Wertz and Dr. Karen Wynn, both psychologists at Yale University.

They wrote, “Throughout human evolution... plants have been important in human’s life. Yet, for all of these benefits, plants have always caused very real dangers.”

“Plants produce toxins (毒素) as defences that can be harmful, or even deadly. Some plants also produce physical defences, such as thorns (荆棘) can damage tissues (组织) and cause effects over the whole body.”

They added, “We predicted that babies may have behavioural strategies that reduce dangers caused by plants.”

To test their theory, the researchers studied how children aged eight to 18 months old reacted when presented with a variety of objects. It took much longer for children to grab plants; objects that were pretended to look like plants also caused a slow response time.

For parents attempting to spoon some peas into the mouth of their child, this finding should come as welcome relief.

1. The underlined word “they” in Paragraph 3 refers to_____?
A.the parentsB.the researchersC.the babiesD.the plants
2. What does the underlined word “wary” in the third paragraph mean?
A.CuriousB.AfraidC.TiredD.Certain
3. What did early humans probably do in order to keep away from illness or injury?
A.They choose to make more man-made things.B.They didn’t allowed their children to touch plants.
C.They chose to have little contact with plants.D.They tried very hard to escape from the past.
4. What was plants’ role in early human’s life?
A.They were important, in spite of danger.
B.They reacted badly to human evolution.
C.They contributed to the most deaths and illness.
D.They developed human physical defenses against dangers.
5. What’s the passage mainly about?
A.Why some plants are harmful.B.How humans react to plants.
C.Why children don’t like to eat greens.D.When children from behavioural strategies.

相似题推荐

阅读理解-单选(约330词) | 适中 (0.65)
文章大意:本文主要介绍了太阳风暴及其影响。

【推荐1】Imagine a perfect day: the weather is good and everything seems fine. When, suddenly, your mobile phone loses its signal, the television has no programmes, and you can’t get online with your computer.

What has happened? These are just the types of problems a solar storm (太阳风暴) might cause. You may not think of storms as putting our society in danger. But today, a solar storm is as serious as other bad events, such as earthquakes.

A solar storm is caused by solar flares (太阳耀斑): large explosions (爆炸) near the Sun that can give off lots of energy. The strong energy can stop the satellite systems (卫星系统) that control our computers, telecom networks and so on. These storms can even cause the power to go out for weeks or months.

Scientists have recorded some of the strongest sun flares in years. One happened around Valentine’s Day, 2011. It caused radio and satellite signals to go down in some northern cities in China.

“Solar flare activity is going to be much worse than what we’ve seen in the past. We’re not talking about a few cities losing power, it could be half of the country, may be more,” SolarStormWarning.com, a US website about space weather, warned.

Scientists say that little can be done to predict such a storm. Governments around the world are trying to work together before the next storm, although they are not sure when that may happen.

1. From the first two paragraphs we can know solar storms are ________ our society.
A.good forB.far fromC.seldom inD.harmful to
2. Which is the right order of the following things?
a. Solar flares give off lots of energy.   b. People cannot get online with their computers.
c. Solar storms happen.                         d. Satellite systems are stopped.
A.a-b-c-dB.a-c-d-bC.c-a-b-dD.c-b-a-d
3. The radio and satellite signals went down in some northern cities in China, 2011, because ________.
A.a solar storm stoppedB.an earthquake happened
C.a strong sun flare happenedD.the satellite systems didn’t work
4. What is the writer’s main purpose in writing the text?
A.To introduce what solar storms are to people.
B.To ask people to prevent the solar storm from happening.
C.To tell people how to solve the problems caused by solar storms.
D.To call for scientists to predict when the next solar storm will happen.
2024-04-05更新 | 51次组卷
阅读理解-单选(约200词) | 适中 (0.65)
文章大意:本文主要向我们介绍了早点睡觉有助于减肥。

【推荐2】If you decide to lose weight, you may prepare a healthy meal, exercise and drink a lot of water. But what if there is something you can do while you're sleeping that can help lose your weight?

Actually (事实上), the way is by going to sleep earlier. According to a study at the Salk Institute, the longer we stay up, the more calories (卡路里) we will take in.

There are more advantages in getting more sleep, too. Sleeping for less than eight hours is harmful for your weight loss progress, according to a study carried out by Annals of Internal Medicine. The study notes that lack of sleep can actually slow down weight loss and that people who sleep only 5.5 hours have less fat loss than those who sleep 8 hours.

All of these facts mean that just a simple change in your daily life can help you reach (实现) your weight loss goal. So let's go to sleep earlier!


根据材料内容选择最佳答案。
1. How does the writer start the text?
A.By telling a story.B.By raising a question
C.By answering a question.D.By giving an example.
2. Why does going to bed early help lose weight cording to the study at the Salk Institute?
A.Because it will help lose the fat.B.Because it will change people's lifestyle.
C.Because it will go up the speed of fat growth.D.Because it will make us take in fewer calories.
3. What does the word "lack" in paragraph 3 mean in Chinese?
A.利用B. 改善C. 提高D. 不足
4. What does the text mainly talk about?
A.The ways to lose weight.B.The best time of going to bed.
C.Sleeping can help lose weight.D.Staying up late can help lose weight.
5. What's the theme (主题) of the text?
A.Culture.B.Travel.C.Nature.D.Life.
2022-07-14更新 | 47次组卷
阅读理解-五选五(约210词) | 适中 (0.65)
文章大意:本文主要介绍了人们为什么喜欢糖及糖对健康的影响。
【推荐3】阅读填空。阅读短文及文后A~E选项,选出可以填入各题空白处的最佳选项。

Why do we love sugar so much?

Many scientists believe our love of sugar may actually be hard to stop. When we eat or drink sugary foods, the sugar enters our blood and makes us feel good. Then the good feeling goes away, leaving us wanting more. All tasty foods do this, but sugar has a very strong effect.     1     Doctors recommend we all cut down on it.

“Every time I study an illness and try to find out the first cause, I find my way back to sugar,” says scientist Richard Johnson. One-third of adults worldwide have high blood pressure, and up to 347 million have diseases.     2    

Our bodies are suitable to live on very little sugar. Early humans often had very little food, so their bodies learned to be very good at storing sugar as fat.     3     But today, most people have more than enough. So the thing we needed before may now be killing us.

    4     We need to eat less sugar. The trouble is, in today’s world, it’s difficult to avoid. From breakfast to dinner, our foods are increasingly filled with it.

    5     Many schools are replacing sugary desserts with fruit. Other schools are growing their own food in gardens, or encourage students to take more exercise.

A.So what is the good way to solve it?
B.It is believed that sugar is one of the causes.
C.But there are those who are fighting back against sugar.
D.In this way, it is in fact something harmful to our health.
E.In this way, they had energy stored for when there was no food.
2024-01-24更新 | 53次组卷
共计 平均难度:一般