Bumblebees(大黄蜂) are clever: when pollen(花粉) is short and plants near the nest are not yet flowering, they have learned to force them to bloom. Research published on Thursday in Science shows that the insects puncture the plants’ leaves, which causes them to flower about 30 days earlier than they otherwise would. How the technique developed and why the plants react by blooming remain unclear.
Consuelo De Moraes, a chemical ecologist at the Swiss Federal Institute of Technology, says she and her teammates were observing one kind of bumblebee in an unrelated experiment when they noticed the insects were damaging plant leaves and wondered why. “At first we thought they might be feeding on the plants,” she says. And because previous research had shown stress could cause plants to flower, they also wondered whether the bees might be creating blooms on purpose.
To find out, the team placed bumblebees together with tomato plants in cages. The bees soon cut several holes in the leaves of each plant. As a test, the researchers tried to copy the bumblebee damage in additional plants with a knife. Both sets of plants with injured leaves bloomed faster, but the ones punctured by the bees flowered weeks earlier, suggesting that chemicals in the insects’ saliva(唾液) may be involved as well.
Next, the researchers moved out of the laboratory to see whether bumblebees would continue to damage nonflowering plants near their nest even if blooming plants were available farther away. They did so. The findings suggest the bees’ behavior is an adaptation that improves food-hunting efficiency(效率).
In the future, scientists could test how the behavior may have developed and how widespread it is among other wild bumblebees, as well as what is happening in plants after a bee bite. Understanding those questions could help us better face the climate change.
1.What does the underlined word “puncture” in Paragraph 1 probably mean?
A.bite B.touch
C.kiss D.eat
2.What inspired Consuelo and her team to do the present research?
A.The stress causing plants to flower. B.The difference in plants’ flowering time.
C.The bumblebees’ feeding on the plants. D.The bumblebees’ damaging plants’ leaves.
3.Why did the researchers copy what the bumblebees did?
A.To prove a knife cut can work as a bee bite.
B.To figure out what helps plants flower faster
C.To find out why bumblebees damage plants.
D.To show bumblebees’ saliva helps plants bloom.
4.What have the researchers made clear?
A.What happens in plants after a bee bite.
B.How bumblebees have learned the technique.
C.Whether bumblebees are clever in finding food.
D.Whether all the bumblebees have learned the skill.
高一英语阅读选择中等难度题
The insects are important to farmers. When a honeybee lands on a flower in plant, pollen (花粉) sticks to its legs. When the bee lands on another flower, some of the pollen falls off and fertilizes the second plant.
The act of spreading pollen is responsible for many fruits, vegetables, nuts and other crops. Yet about 30 percent of honeybees in the United States and other areas have died in recent years.
Mike Leggett is a researcher at the University of Maryland. He wants to learn why so many bees are dying. “The number of colonies (蜂群) that die every winter has been one in three. So on average 30 percent of the colonies have died every winter over the last six winters. And that’s a huge number.” His research team examined the pollen that honeybees carried to their homes. They found that the pollen contained high levels of 35 different pesticides (杀虫剂), which are chemicals used to protect plants. “Pesticides are used, and have been used, pretty widely, for centuries, to protect plants from diseases,” says Mr Leggett.
Keith Oh linger, a farmer and beekeeper in Maryland, has watched many of his bees die every winter. Mr Ohlinger thinks widespread bee death is caused by several things happening at once. But he does not feel sure that pesticides are a part of the problem, “I felt it was the result of a lot of little things. I didn’t feel that there was probably one smoking gun. But there’s a division (分歧) there, some people feel that it is just one thing.”
Honeybees are important to agriculture. This makes the search for an answer to their death very important for Mr Leggett’s team. As he knows, one in every three bites of food we eat is somehow pollinated by honeybees.
1.What could be a suitable title for the text?
A. Why Are Honeybees Important?
B. How Do Honeybees Make Honey?
C. Pesticides Might Harm Honeybees
D. Honeybee Protection in Maryland
2.How does Mr Leggett sound in paragraph 3?
A. Worried. B. Happy.
C. Surprised. D. Hopeful.
3.We know from the fifth paragraph that Keith Ohlinger ________.
A. has become rich by keeping bees
B. cares little about the death of his bees
C. has never used pesticides on his farm
D. doubts whether pesticides have killed his bees
4.In which part of a website can we most probably read the text?
A. Agriculture. B. Health.
C. Food. D. Technology.
高一英语阅读理解中等难度题查看答案及解析
Tom and Jack are both very clever. ________, Tom is _______ Jack.
A.All in all, as a clever boy as B.In other words, as clever a boy as
C.That is to say, as a clever boy as D.In word, as clever a boy as
高一英语单项填空中等难度题查看答案及解析
Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experiences? Strangely enough, the answer to both these questions is yes.To some degree our intelligence is given to us at birth, and no amount of special education can make a genius out of a child born with low intelligence.On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings.Thus the limits of a person's intelligence are fixed at birth, but whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.
It is easy to show that intelligence is to some degree something we are born with.The closer the blood relationship between two people, the closer they are likely to be in intelligence.Thus if we take two unrelated people at random(随机地)from the population, it is likely that their degrees of intelligence will be completely different.If on the other hand we take two identical(完全相同的) twins they will very likely be as intelligent as each other.Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring.We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part.This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all, are likely to have similar degrees of intelligence.
1.Which of these sentences best describes the writer’s point in Para.1?
A.To some degree, intelligence is given at birth.
B.Intelligence is developed by the environment.
C.Some people are born clever and others born stupid.
D.Intelligence is fixed at birth, but is developed by the environment.
2.It is suggested in this passage that_______.
A.unrelated people are not likely to have similar intelligence
B.close relations usually have similar intelligence
C.the closer the blood relationship between people, the more different they are likely to be in intelligence
D.people who live in close contact with each other are not likely to have similar degrees of intelligence
3.In Para.1, the word "surroundings" means_______.
A.intelligence B.life
C.environments D. housing
4.The best title for this article would be_______.
A.On Intelligence
B.What Intelligence Means
C.We are Born with Intelligence
D.Environment Plays a Part in Developing Intelligence
高一英语阅读理解简单题查看答案及解析
Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experience? Strangely enough, the answer to these questions is yes. To some extent our intelligence is given to us at birth, and no amount of education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of person's intelligence are fixed at birth, whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.
It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random from population, it is likely that their degree of intelligence will be completely different. If, on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degree of intelligence.
1.Which of these sentences best describes the writer’s point in Paragraph 1?
A.To some extent, intelligence is given at birth.
B.Intelligence is developed by the environment.
C.Some people are born clever and others born stupid.
D.Intelligence is fixed at birth, but is developed by the environment.
2.It is suggested in this passage that_______.
A.close relation usually have similar intelligence
B.unrelated people are not likely to have different intelligence
C.the closer the blood relationship between people, the more different they are likely to be in intelligence
D.people who live in close contact with each other are not likely to have similar degrees of intelligence
3.The phrase “at random”(Line3, para.2) means _______ .
A.purposely B.frequently
C.aimlessly D.independently
4.The best title for this article would be_______.
A.What Dose Intelligence Mean ?
B.On Intelligence
C.We Are Born with Intelligence
D.Environment Plays a Part in Developing Intelligence
高一英语阅读理解中等难度题查看答案及解析
Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experience? Strangely enough, the answer to these questions is yes. To some extent our intelligence is given to us at birth, and no amount of education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. While the limits of a person’s intelligence are fixed at birth, whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.
It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random(随机地) from population, it is likely that their degrees of intelligence will be completely different. If, on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degrees of intelligence.
1.Which best describes the writer’s point in Para.1?
A. Intelligence is given at birth.
B. Intelligence is developed by the environment.
C. Intelligence is fixed at birth, but is developed by the environment.
D. Some people are born clever and others born stupid.
2.It is suggested in this passage that __________.
A. close relations usually have similar intelligence
B. unrelated people are not likely to have similar intelligence
C. the closer the blood relationship between people, the more different they are likely to be in intelligence
D. people who live in close contact with each other are not likely to have similar degrees of intelligence
3.The example of the twins going to a university and to a factory separately shows_________.
A. the importance of their intelligence
B. the effect of environment on intelligence
C. the importance of their positions
D. the part that birth plays
4.The best title for this article would be “_____________”.
A. On Intelligence
B. What Intelligence Means
C. Born with Intelligence
D. Environment Decides Intelligence
高一英语阅读理解简单题查看答案及解析
Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experience? Strangely enough, the answer to these questions is yes. To some extent our intelligence is given to us at birth, and no amount of education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of person's intelligence are fixed at birth, whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.
It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random from population, it is likely that their degree of intelligence will be completely different. If, on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degree of intelligence.
1.Which of these sentences best describes the writer’s point in Paragraph 1?
A. To some extent, intelligence is given at birth.
B. Intelligence is developed by the environment.
C. Some people are born clever and others born stupid.
D. Intelligence is fixed at birth, but is developed by the environment.
2.It is suggested in this passage that_______.
A. close relation usually have similar intelligence
B. unrelated people are not likely to have different intelligence
C. the closer the blood relationship between people, the more different they are likely to be in intelligence
D. people who live in close contact with each other are not likely to have similar degrees of intelligence
3.The phrase “at random”(Line3, para.2) means _______ .
A. purposely B. frequently
C. aimlessly D. independently
4.The best title for this article would be_______.
A. What Dose Intelligence Mean ?
B. On Intelligence
C. We Are Born with Intelligence
D. Environment Plays a Part in Developing Intelligence
高一英语阅读理解中等难度题查看答案及解析
Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experiences? Strangely enough,the answer to both these questions is yes. To some extent(程度)our intelligence is given to us at birth,and special education can never make a genius(天才) out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of a person’s intelligence are fixed at birth, but whether or not he reaches those limits will depend on his environment. This view, now held by most experts can be supported in a number of ways.
It is easy to say that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random from the population, it is likely that their degrees of intelligence will be completely different. If on the other hand we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters,parents and children,usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine that now we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all, are likely to have similar degrees of intelligence.
1.By using the example that two people closer in blood relationship are closer in intelligence that writer wants to prove _.
A.intelligence can be developed by environment |
B.intelligence is given at birth |
C.intelligence can be developed by experience |
D.education plays an important part in the development of education |
2.A child who lives in rich and varied surroundings turns out higher in intelligence because ________.
A.his family is rich and therefore can afford to develop his intelligence |
B.he can break the limits of intelligence fixed at birth |
C.his family is rich and provides him with various healthy food |
D.these surroundings are likely to help him reach the limits of their intelligence |
3.In the second paragraph “if we take two unrelated people at random from the population...” means “if we ____.”
A.choose two persons who are relative |
B.take out two different persons |
C.choose two persons with different intelligence |
D.pick any two persons |
4.The best title for this passage might be __________.
A.Birth and Environment | B.Intelligence |
C.The Answer to a Question | D.Intelligence and Education |
高一英语阅读理解极难题查看答案及解析
A saying is a short, clever expression that usually contains advice or expresses some obvious truth. Though the meanings shown for sayings are believed to be generally accepted, for some sayings sometimes they may go otherwise.
No Use Crying Over Spilt(溢出的) Milk. Crying can help people recover from disappointment. True, it’s dangerous to live on the past, but holding back those spilt-milk tears could hurt even more. A survey of more than 5,000 weepers in the Journal of Social and Clinical Psychology suggests that people who do not cry only feel worse. Or, to put it another way, “Sometimes we should cry over spilt milk,” writes Aaron Ben-Ze’ev, a philosophy professor at the University of Haifa in Israel. “Otherwise, how will we learn to value milk, and how will we avoid spilling it again?”
You Catch More Flies with Honey than with Vinegar. Vinegar(醋) is a fly magnet. If you’ve ever endured a fruit fly(苍蝇) invasion in your home, a bowl of vinegar was likely your first line of defense. Researchers from Northwestern University found that “The hungrier a fly gets, the quicker it gives in to vinegar”.
Money Can’t Buy Happiness. Yes, it can. Happiness is going by no matter what your bank account looks like, but research shows that money does, in fact, give you short-term bursts of joy—if you spend wisely. Experiences such as concerts or holidays have been shown to bring greater happiness than shopping. People who spend money on others are also measurably happier than those who treat themselves. So do yourself a favour: buy happiness for someone else.
Pick the Low-Hanging Fruit First (“Low-hanging fruit” refers to easy-to-reach fruit or easy-to-finish tasks). Lower fruit is often the last to grow fully. “Fruit that is high up, exposed to the sun, develops the fastest,” says Gennaro Fazio, a plant geneticist(基因学家) for the USDA’s Agricultural Resource Service, “and you want to pick the low-hanging fruit last, so it has more time to develop.” What’s more, “Starting at the top makes the job easier,” says Henry Rueda, an apple-picking professional. When pickers harvest from top to bottom, the bags of fruit they carry around their necks and shoulders grow heavier as they move downwards.
1.Which of following statements is supported by Gennaro Fazio?
A. The low-hanging fruit is often the last that we are supposed to pick.
B. The first goals set for yourself should be easier to achieve than other goals.
C. Workers enjoy the ease with which the lower fruit can be picked in the tree.
D. Every situation is different and easy pickings that count are done first.
2.According to the article, the writer may argue that ________.
A. one’s words can never be taken back just like the spilt milk
B. money is not a good servant but a bad master when it speaks
C. blindly believing the whole book is worse than having no book
D. flies are much fonder of honey than vinegar when they’re hungry
3.Which of the following is the best title of the passage?
A. What Are the Household Sayings for?
B. What Are Wrong with These Sayings?
C. Where Are These Well-known Sayings from?
D. How Can These Sayings Be Understood?
高一英语阅读理解困难题查看答案及解析
Winter is the time of the year________the days are short and nights are long.
A.on which B.that C.when D.where
高一英语选择题中等难度题查看答案及解析
Bees may soon need to add protein shakes to their diet. Pollen (花粉) normally provides their protein (蛋白质). But rising levels of carbon dioxide (CO2) in the air have reduced the protein in pollen. That’s what a new study finds.
Scientists compared recently collected flowers from Canada goldenrod. Then they compared pollen in them to pollen in goldenrod reserved at a museum in Washington, DC. They found today's plants have less protein. Protein levels in pollen from the older flowers were 18 percent. Today's goldenrod pollen has only about 12 percent protein. That's about one-third less than 172 years ago. Over that same period, CO2 levels have gone up by more than one-third. Back more than 170 years ago, they were about 280 parts per million in air. Today they are about 398 ppm.
To test whether CO2 changes had played a role in the falling protein levels, the researchers did some tests. They grew goldenrod for two years at CO2 levels of up to 500 ppm. More CO2 in the air led to lower levels of protein in the flowers’ pollen.
Joan Edwards, one of the researchers, says that this drop in pollen protein could affect a bee’s diet and health. It would be like eating junk food, tasting good but offering less nutrition (营养).
Honeybees need to eat lots of protein. They use it to feed their young. They also need it to keep their immune systems healthy, says Cédric Alaux, a bee biologist at the French agricultural research agency.
Bee populations have been decreasing worldwide in recent years. A drop in their food quality might play a role, Edwards says. And that drop might affect crops too. “The health of the bee population is not just for the flowers and the bees and biodiversity.” She worries it also could play a role in “human health and well-being.”
1.The second paragraph is mainly developed by __________.
A. giving examples B. following the time order
C. explaining reasons D. providing numbers
2.According to the text, Joan Edwards might agree that ____________.
A. the drop of protein in pollen has a good influence on bees
B. today’s flowers can provide bees with enough nutrition
C. the drop of protein in pollen leads to a smaller population of bees
D. the smaller population of bees has nothing to do with the human race
3.What is the main idea of the text?
A. Today’s flowers contain more protein.
B. Protein levels in pollen connect with CO2 levels.
C. Drop of protein in pollen affects bees.
D. Bee population is becoming smaller recently.
高一英语阅读理解简单题查看答案及解析