Fishspeciesareexpectedtoshrink

更新 2022-09-03
科目英语
题型阅读理解
难度中等
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Fish species are expected to shrink in size by up to 24% because of global warming, say scientists.
The scientists argue that failure to control greenhouse gas emissions will have a greater effect on marine ecosystems than previously thought. Previous research has suggested that changing ocean temperatures would affect both the distribution and the reproductive abilities of many species of fish. This new work suggests that fish size would also be heavily affected.
The researchers built a model to see how fish would react to lower levels of oxygen in the water. As ocean temperatures increase, so do the body temperatures of fish. But, according to lead author, Dr William Cheung, from the University of British Columbia, the lower level of oxygen in the water is key. Warmer waters could decrease ocean oxygen levels and greatly reduce fish body weight. On the other hand, rising temperatures directly increase the metabolic rate of the fish's body function. This leads to an increase in oxygen demand for normal body activities. So the fish will run out of oxygen for growth at a smaller body size.
The research team also used its model to predict fish movements as a result of warming waters. The group believes that most fish populations will move towards the Earth's poles at a rate of up to 35km per decade. "So in, say, the North Sea," says Dr Cheung," one would expect to see more smaller-body fish from tropical waters in the future."
Taking these factors into consideration, the research team concludes that fish body size will shrink between 14% and 24%, with the largest decreases in the Indian and Atlantic oceans.
When compared with actual observations of fish sizes, the model seems to underestimate what's actually happening in the seas. The researchers looked at two case studies involving North Atlantic cod and haddock. They found that recorded data on these fish showed greater decreases in body size than the models had predicted.
Dr Alan Baudron, from the University of Aberdeen, UK, believes smaller-sized fish could seriously affect the ability of fish to reproduce. "Smaller fish produce fewer and smaller eggs which could affect the reproductive potential of fish stocks," he said.
What's the main idea of the passage?

A．Global warming makes fish smaller.

B．Global warming makes fish decrease in numbers.

C．Global warming affects the fish distribution.

D．Global warming affects the ability of fish to reproduce.

What is the key factor making the fish smaller now?

A．The rising body temperatures.

B．The lower level of oxygen in the water.

C．The increasing metabolic rate.

D．The normal body activities.

We can infer that as ocean temperatures increase .

A．more big fish will be born in the sea

B．fish tend to swim towards the shore

C．fish tend to move towards the warm areas

D．fish tend to move towards the colder areas

What does the underlined word "underestimate" mean?

A．make an exact prediction of	B．make too low an estimate of
C．make too high an estimate of	D．make a careful study of

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相关试题

E
It is true that good writers rewrite and rewrite and then rewrite some more .But in order to work up the desire to rewrite, it is important to learn to like what you write at the early stage.
I am surprised at the number of famous writers I know who say that they so dislike reading their own writing later that they even hate to look over the publishers’ opinions .One reason we may dislike reading our own work is that we’re often disappointed that the rich ideas in our minds seem very thin and plain when first written down .Jerry Fodor and Steven Pinker suggest that this fact may be a result of how our minds work..
Different from popular belief ,we do not usually think in the works and sentences of ordinary language but in symbols for ideas (known as “mentalese”), and writing our ideas down is an act of translation from that symbolic language .But while mentalese contains our thoughts in the form of a complex tapestry (织锦)，writing can only be composed one thread at a time .Therefore it should not be surprising that our first attempt at expressing ideas should look so simple .It is only by repeatedly rewriting that we produce new threads and connect them to get closer to the ideas formed in our minds.
When people write as if some strict critics (批评家) are looking over their shoulder, they are so worried about what this critic might say that they get stuck before they even start. Peter Elbow makes an excellent suggestion to deal with this problem. When writing we should have two different minds. At the first stage, we should see every idea, as well as the words we use to express it, as wonderful and worth putting down. It is only during rewrites that we should examine what we excitedly wrote in the first stage and check for weaknesses.
68. What do we learn from the text about those famous writers?
A. They often regret writing poor works
B. Some of them write surprisingly much.
C. Many of them hate reading their own works
D. They are happy to review the publishers’ opinions.
69. What do people generally believe about the way human minds work?
A. People think in words and sentences.
B. Human ideas are translated into symbols.
C. People think by connecting threads of ideas.
D. Human thoughts are expressed through pictures.
70. What can we conclude from the text?
A. Most people believe we think in symbols.
B. Loving our own writing is scientifically reasonable.
C. The writers and critics can never reach an agreement.
D. Thinking and writing are different stages of mind at work.

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D
Remembering names is an important social skill．Here are some ways to master it．
Recite and repeat in conversation．
When you hear a person’s name，repeat it．Immediately say it to yourself several times without moving your lips．You could also repeat the name in a way that does not sound forced or artificial．
Ask the other person to recite and repeat．
You can let other people help you remember their names．After you’ve been introduced to someone，ask that person to spell the name and pronounce it correctly for you．Most people will be pleased by the effort you’re making to learn their names．
Admit you don’t know．
Admitting that you can’t remember someone’s name can actually make people relaxed．Most of them will feel sympathy if you say．“I’m working to remember names better．Yours is right on the tip of my tongue．What is it again?”
Use associations．
Link each person yon meet with one thing you find interesting or unusual．For example，you could make a mental note: "Vicki Cheng -- tall, black hair.” To reinforce (加强) your associations, write them on a small card as soon as possible.
Limit the number of new names you learn at one time.
When meeting a group of people, concentrate on remembering just two or three names. Free yourself from remembering every one. Few of the people in mass introductions expect you to remember their names. Another way is to limit yourself to learning just first names. Last names can come later.
Go early.
Consider going early to conferences, parties and classes. Sometimes just a few people show up on time. That's fewer names for you to remember. And as more people arrive, you can hear them being introduced to others -- an automatic review for you.
64. How will most people feel when you try hard to remember their names?
A. They will be moved.                B. They will be annoyed.
C. They will be delighted.              D. They will be discouraged.
65. If you can't remember someone's name, you may ________
A. tell him the truth                   B. tell him a white lie
C. ask him for pity                    D. ask others to help you
66. When you meet a group of people, it is better to remember _______
A. all their names                     B. a couple of names first
C. just their last names                 D. as many names as possible
67. What does the text mainly tell us?
A. Tips on an important social skill.       B. Importance of attending parties.
C. How to make use of associations.       D. How to recite and repeat names.

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C
We have met the enemy, and he is ours. We bought him at a pet shop. When monkey-pox, a disease usually found in the African rain forest, suddenly turns up in children in the American Midwest, it’s hard not to wonder if the disease that comes from foreign animals is homing in on human beings. “Most of the infections (感染) we think of as human infections started in other animals,” says Stephen Morse, director of the Center for Public Health Preparedness at Columbia University.
It’s not just that we’re going to where the animals are; we’re also bringing them closer to us. Popular foreign pets have brought a whole new disease to this country. A strange illness killed Isaksen’s pets, and she now thinks that keeping foreign pets is a bad idea. “I don’t think it’s fair to have them as pets when we have such a limited knowledge of them,” says Isaksen.
“Laws allowing these animals to be brought in from deep forest areas without stricter control need changing,” says Peter Schantz. Monkey-pox may be the wake-up call. Researchers believe infected animals may infect their owners. We know very little about these new diseases. A new bug (病毒) may be kind at first. But it may develop into something harmful. Monkey-pox doesn’t look a major infectious disease. But it is not impossible to pass the disease from person to person.
60. We learn from Paragraph 1 that the pet sold at the shop may _________.
A. come from Columbia            B. prevent us from being infected
C. enjoy being with children        D. suffer from monkey-pox
61. Why did Isaksen advise people not to have foreign pets?
A. They attack human beings.              B. We need to study native animals.
C. They can’t live out of the rain forest.      D. We do not know much about them yet.
62. What does the phrase “the wake-up call” in Paragraph 3 most probably mean?
A. a new disease                     B. a clear warning
C. a dangerous animal                D. a morning call
63. The text suggests that in the future we _______.
A. may have to fight against more new diseases
B. may easily get infected by diseases from dogs
C. should not be allowed to have pets
D. should stop buying pets from Africa

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B
“In only six days I lost seven pounds of weight.”
“Two full inches in the first three days!”
These are the kinds of statements used in magazine, newspaper, radio and television ads, promising new shapes and new looks to those who buy the medicine or the device of such products say they can shape the legs, slim the face, smooth wrinkles, or in some other way to beauty or desirability.
Often such products are nothing more than money-making things for their promoter. The results they produce are questionable, and some are dangerous to health.
To understand how these products can be legally promoted to the public, it is necessary to understand something of the laws covering their regulation. If the product is a drug, FDA(Food Drug Administration)can require proof under the Food, Drug, and Cosmetic Act that it is safe and effective before it is put on the market. But if the product is a device, FDA has no authority to require premarketing proof of safety or effectiveness. If a product already on the market is a danger to health, FDA can request the producer or distributor to remove it from the market voluntarily, or it can take legal action ,including seizure (查封) of the product.
One notable case a few years ago involved an electrical device called the Relaxacisor, had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds that it was dangerous to health and life.
Obviously, most of the devices on the market have never been the subject of court proceedings (法律诉讼), and new devices appear continually, Before buying, it is up to the consumer to judge the safety or effectiveness of such items.
55. It can be inferred that ads mentioned in the text are ______.
A. objective         B. costly         C. unreliable         D. illegal
56. Which of the following is true according to the text?
A. The court is in charge of removing dangerous product.
B. New products are more likely to be questionable.
C. The production of a device must be approved by FDA.
D. The promoters usually just care about profits.
57. FDA can ask for the proof of safety and effectiveness of a product ________.
A. if it is a drug
B. if it is a device
C. if its consumers make complaints
D. if its distributors challenge FDA’s authority
58. The Relaxacisor is mentioned as_______.
A. a product which was designed to produce electricity
B. a product whose distributor was involved in a legal case
C. a successful advertisement of a beauty product
D. an example of a quality beauty product
59. The author intends to __________
A. make consumers aware of the promoters’ false promises
B. show the weakness of the law on product safety
C. give advice on how to keep young and beautiful
D. introduce the organization of FDA

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第三部分:阅读理解(共20小题;每小题2分,满分40分)
阅读下列短文，从每篇短文后所给各题的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
A
It was the first snow of winter – an exciting day for every child but not for most teachers. Up until now, I had been old enough to dress myself, but today I would need some help. Miss Finlayson, my kindergarten teacher, had been through first snow days many times, but I think she may still remember this one.
I managed to get into my wool snow trousers. But I struggled with my jacket because it didn’t fit well. It was a hand-me-down from my brother, and it made me wonder why I had to wear his ugly clothes. At least my hat and scarf were mine, and they were quite pretty. Finally it was time to have Miss Finlayson help me with my boots（靴子）.
In her calm, motherly voice she said, “By the end of winter, you will all be able to put on your own boots.” I didn’t realize at the time that this was more a statement of hope than of confidence.
I handed her my boots and stuck out my foot. Like most children, I expected grown-ups to do all the work. After much pushing, she managed to get the first one into place and then, with a sigh, worked the second one on too.
I announced, “They’re on the wrong feet.”
She struggled to get the boots off and went through the joyless task of putting them on again.
“They’re my brother’s boots, you know,” I said. “I hate them!”
Somehow, from long years of practice, she managed to act as though I wasn’t an annoying little girl, She pushed and pushed, less gently this time. With a greater sigh, seeing the end of her struggle with me, she asked, “Now, where are your mittens（连指手套）?”
I looked into her eyes and said, “I didn’t want to lose them, so I hid them in the toes of my boots.”
51. According to the passage，the little girl got ___________ from her brother.
A. the wool snow pants and the jacket        B. the jacket and the boots
C. the jacket and the hat                   D. the boots and the gloves
52. What made it so hard for the teacher to help the little girl put her boots on?
A. The gloves in the toes of the boots.       B. The slowness of the teacher.
C. The wrong size of the boots.            D. The unwillingness of the girl.
53．Why does the author say Miss Finlayson would remember that first snow day?
A．Because the little girl was in her brother’s clothes.
B．Because it was the most exciting day of the winter.
C．Because the little girl played a trick on her.
D．Because the little girl wore a pretty scarf.
54．We can learn from the text that Miss Finlayson_________.
A．was losing confidence in the little girl    B．gradually lost patience with the little girl
C．because disappointed with the little girl   D．was getting bored with the little girl

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