题目
题型:不详难度:来源:
The fate of polar bears could be even worse than that estimate, because sea ice in the Arctic might be disappearing faster than the available computer models predict, the geological survey said in a report aimed at determining whether the big white bear should be listed as a threatened species.
“There is a definite link between changes in the sea ice and the welfare of polar bears,” said Steve Amstrup, who led the research team. He says Arctic sea ice is already at the lowest this year and is expected to retreat(退却) farther this month.
That means that polar bears—some 16,000 of them -- will disappear by 2050 from parts of the Arctic where sea ice is melting most rapidly, along the north coasts of Alaska and Russia, researchers said in a telephone briefing(简报).
Other polar bears could survive beyond that date but many of those could be gone by 2100, Amstrup said. By this century’s end, the only polar bears left might live in the Canadian Arctic islands and along the west coast of Greenland.
“It is likely to result in loss of approximately two-thirds of the world’s current polar bear population by the mid 21st century,” the report’s executive summary said.
“Because the observed trajectory(轨迹)of Arctic sea ice decline appears to be underestimated by currently available models, this assessment of future polar bear status may be conservative(保守的).”
In January, the US Fish and Wildlife Service proposed listing the polar bear as a threatened species, noting polar bears depend on sea ice as a platform to hunt seals, their main food.
Without enough sea ice, polar bears would be forced onto land, but they are poor hunters once they get out of the water and ice, the researchers said. The bears’ disappearance would probably take place as young cubs(幼兽)failed to survive to adulthood and females were unable to reproduce successfully.
小题1:What was the US Geological Survey intended to do?
A.To determine whether the polar bear was in danger. |
B.To measure how fast the sea ice melts in the Arctic. |
C.To check the predictions of the computer models. |
D.To find out the exact number of the polar bear. |
A.The pollution of the Arctic region. | B.The sea ice melting at high speed |
C.Fewer food sources being left. | D.The temperature getting colder. |
A.help young polar bears to survive the cold winter |
B.have large number of seals living in the oceans |
C.make sure there is enough sea ice in the Arctic |
D.provide chances for adult polar bears to reproduce |
答案
小题1:A
小题2:B
小题3:C
解析
试题分析:本文是一篇说明文,说明了美国地质专家预测到2050年,海冰融化导致北极熊列为濒危物种,但是北极熊比预计的更糟,因为在北极海水的消失比电脑预测的更快,地质勘察报告旨在确定是否将北极熊列为濒危物种
小题1:细节题,由第二段最后一句the geological survey said in a report aimed at determining whether the big white bear should be listed as a threatened species可以知道答案,故选A。
小题2:细节题。由第一段Two-thirds of the world’s polar bear population could be gone by 2050 if predictions of melting sea ice hold true, the US Geological Survey reported on Friday.可以知道答案,所以选B。
小题3:推理题,由倒数第二段最后一句noting polar bears depend on sea ice as a platform to hunt seals, their main food.可以推出答案,所以选C
点评:做细节题的关键是找出原文的根据,认真核查题支和原文的异同,常犯错误有:绝对化语言,范围扩大或缩小,以偏概全,张冠李戴等。推断题测试考生在阅读基础上的逻辑推理能力,要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释。考生首先要仔细阅读短文,完整了解信息,准确把握作者观点。
核心考点
试题【WASHINGTON—Two-thirds of the world’s polar bear population could be gone by 2050】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
When you get in your car, you reach for it.When you’re at work, you take a break to have a moment alone with it.When you get into a lift, you play with it.
Cigarettes? Cup of coffee? No, it’s the third most addictive thing in modern life, the cell phone.And experts say it is becoming more difficult for many people to curbtheir longing to hug it more tightly than most of their personal relationships.
With its shiny surface, its smooth and satisfying touch, its air of complexity, the cell phone connects us to the world even as it disconnects us from people three feet away.In just the past couple of years, the cell phone has challenged individuals, employers, phone makers and counselors(顾问)in ways its inventors in the late 1940s never imagined.
The costs are becoming even more evident, and I don’t mean just the monthly bill.Dr.Chris Knippers, a counselor at the Betty Ford Center in Southern California, reports that the overuse of cell phones has become a social problem not much different from other harmful addictions: a barrier to one-on-one personal contact, and an escape from reality.
Sounds extreme, but we’ve all witnessed the evidence: The person at a restaurant who talks on the phone through an entire meal, ignoring his kids around the table; the woman who talks on the phone in the car, ignoring her husband; the teen who texts messages all the way home from school, avoiding contact with kids all around him.
Is it just rude, or is it a kind of unhealthiness? And pardon me, but how is this improving the quality of life?
Jim Williams, an industrial sociologist based in Massachusetts, notes that cell-phone addiction is part of a set of symptoms in a widening gulf of personal separation.He points to a study by Duke University researchers that found one-quarter of Americans say they have no one to discuss their most important personal business with.Despite the growing use of phones, e-mail and instant messaging, in other words, Williams says studies show that we don’t have as many friends as our parents. “Just as more information has led to less wisdom, more acquaintances via the Internet and cell phones have produced fewer friends,” he says.
If the cell phone has truly had these effects, it’s because it has become very widespread.Consider that in 1987, there were only 1 million cell phones in use.Today, something like 300 million Americans carry them.They far outnumber wired phones in the United States.
小题1:Which of the following best explains the title of the passage?
A.Cell phone users smoke less than they used to. |
B.Cell phones have become as addictive as cigarettes. |
C.More people use cell phones than smoke cigarettes. |
D.Using cell phone is just as cool as smoking cigarettes. |
A.rescue | B.ignore | C.develop | D.control |
A.women use cell phones more often than men |
B.talking on the phone while driving is dangerous |
C.cell phones do not necessarily bring people together |
D.cell phones make one-on-one personal contact easy |
As the time approached, I felt quite 55 . On the first day I 56 fourth in the 1500m race, but I was far from 57 because what I wanted most was the highlight of the sports meeting—250×8 relay race. I would run the last leg for my team.
With a shot, the race began. All the students were 58 for their team. The competition was so 59 that I began to feel nervous. Before my turn came, my team was 60 the others. Even worse, I almost dropped the stick when I was trying to 61 it.
62 after that, there was nothing in my mind except to run as fast as possible. Just when I was approaching the finish line, my legs 63 . Then my promise came to mind again and 64 me on. To my 65 , I was the first to cross the finish line!
66 , I had proved to myself and those who had often laughed at me that I am not 67 at all! My classmates greeted me warmly and I hugged them tightly. I had won the prize as well as their 68 .
From the sports meeting, I learnt that sometimes things are not so difficult as they 69 to be. Just try your best without fear and you might be surprised at the 70 .
小题1: |
|
小题2: |
|
小题3: |
|
小题4: |
|
小题5: |
|
小题6: |
|
小题7: |
|
小题8: |
|
小题9: |
|
小题10: |
|
小题11: |
|
小题12: |
|
小题13: |
|
小题14: |
|
小题15: |
|
小题16: |
|
小题17: |
|
小题18: |
|
小题19: |
|
小题20: |
|
For example, if you force yourself to smile or laugh, even when you don"t feel like smiling or laughing, if you keep at it for a few minutes, you will soon feel like it. Feelings can generate (导致)thoughts, but thoughts can also generate feelings. Control your thoughts and you can control your feelings. Positive thinking is important in all aspects of our lives. There is probably no single factor more important in determining your success in achieving your career objectives than your own attitude.
It"s often been said that in the land of the blind, the one-eyed man is king. And in the office of militant (好战) negativism, the positive workers shine like gold. You cannot control external events, but you can learn to control your reaction to those events and thereby have a positive attitude and be happy. This vital key to success is totally within your control. Use it.
小题1:We can infer from the passage that .
A.positive thinking can cure you of your diseases |
B.positive thinking can easily be generated by anyone |
C.a decline of hormone may cause you to be depressed |
D.a specific chemical reaction is the cause of negative thinking |
A.Feeling and thoughts can generate each other. |
B.It"s easier to control thoughts than to control feelings. |
C.Your success depends wholly on your attitude. |
D.Keeping smiling will surely make you successful. |
A.control your feeling to what is happening to you |
B.be king in your office |
C.pay no attention to what is going on around you |
D.take positive attitude in the office of militant negativism |
A.The Bad Effect of Negative Thinking | B.Why Should People Think |
C.Thinking: The Vital Way | D.Positive Thinking Benefits People |
While it’s well known that our bones need calcium, some studies suggest that high calcium intake doesn’t necessarily lower a person’s risk for fractures(骨折). A Harvard study found that people who drank two or more glasses of milk had no greater protection from breaking a bone than those who drank a glass or less a week.
There is no doubt that we need calcium. Some anti-dairy supporters claim dairy products can lead to heart disease. Much of this claim is based on high-fat dairy products, like cheese and cream, which may indeed lead to some health problems. Some studies have linked high milk intakes with a risk of prostate cancer; this seems also to be caused by high-fat dairy products, but not by dairy products in general.
Although milk has always been regarded as the most important thing we need for our bones, one of the most important things in strengthening bones and reducing the risk of osteoporosis(骨质疏松)is weight-bearing exercise, such as jogging, walking, and weight lifting.
Perhaps we should think of dairy products as less like a nutrient and more like a food. If you like it, eat it. If not, find something else to eat. Some claims may not be completely true. When I eat cream, I’m not thinking about calcium, protein, or any such thing. I’m thinking it is delicious.
小题1:What is the best title for this passage?
A.Milk: is it really necessary for children? | B.The disadvantages of drinking milk. |
C.Milk causes health problems. | D.Milk: is it really good for the body? |
A.avoid milk with Vitamin D and Vitamin A added |
B.spend some time exercising |
C.take in as much calcium as possible |
D.drink more than two glasses of milk every day |
A.milk is the most important thing that we need for our bones |
B.children should not be permitted to eat cream |
C.milk should be considered more like a food than a nutrient |
D.children should drink milk whether they like it or not |
A.Some dairy products may harm our health. |
B.Milk has the highest level of protein of any food. |
C.The writer seldom drank milk when he was young |
D.People who drink milk every day are at a high risk of getting a heart disease. |
Other things can also give some information. For example, a sign at the bus stop helps you to know which bus __8___. A sign on the wall of your school helps you to find the library. Signs on doors tell you __ 9___ to go in or out. __10___ you ever noticed that there are a lot of signs around you and that you receive messages __11__ them all the time? People can communicate __12___ many other ways. A (An) 13__ can use his drawings to tell about beautiful mountains, about the blue sea and many other things. Books __14___ to tell you about all wonderful things in the world and also about people and their ideas. Books, magazines, TV and radio and films all help us to communicate with other people. They all help us to know __15__ is going on in the world.
小题1: |
|
小题2: |
|
小题3: |
|
小题4: |
|
小题5: |
|
小题6: |
|
小题7: |
|
小题8: |
|
小题9: |
|
小题10: |
|
小题11: |
|
小题12: |
|
小题13: |
|
小题14: |
|
小题15: |
|
最新试题
- 1【题文】.函数的单调递减区间是( )A.B.C.D.
- 2读图回答问题。(每空1分,共9分)(1)科考人员测得南美洲马斯怀亚港与我国长城考察站的图上距离约为1.5厘米,则其实际距
- 3咸同年间《夷场行》中写道:“人间何地无沧桑,平填黄浦成夷场;高高下下嘘蜃气,十十五五罗蜂房;青红黄绿辩旗色,规制略似棋枰
- 4下列加点的字读音有错误的一组是 [ ]A.择善从之(zé) 亡矢遗镞(zú) 赋敛(liǎn) 蟠龙(pán)B.乞骸骨
- 5She worked hard ________ everything would be ready by the ti
- 6读“北半球气压带、风带示意图”和“甲、乙两城市气温曲线和降水量柱状图”,回答下列问题。(1)气压带A的名称是______
- 7根据短文内容,判断正(T)误(F)。Dear Jane, After I left Paris I spent
- 8已知,(1)求的值 ;(2)求的值.
- 9下图是实验室用碳酸钙与稀盐酸反应只去二氧化碳并验证七性质的实验装置图,试根据题目要求回答下列问题:(1)仪器a的名称是
- 10Whitney Houston’s sudden death suggests that drug abuse is s
热门考点
- 1近几年,尽管取消了纺织品贸易配额,但贸易歧视依然存在,国际贸易摩擦空前激烈,这对我国出口增长开始形成明显约束。面对这一新
- 2我国对大熊猫的保护所采取的措施是( )A.就地保护B.法制教育和管理C.易地保护D.包括ABC
- 3(1)我们在实验探究有多个变化因素的问题时,我们采用的方法是:只让其中一个因素发生变化,保持其它因素不变。这种方法叫__
- 4设数列的首项,前项和满足关系式: (1)求证:数列是等比数列;(2)设数列是公比为,作数列,使,求和:;(3)若,设,,
- 5地球的形状是一个( )A.正圆球体B.椭球体C.扁球体D.两极部位略扁的不规则球体
- 6某溶液中仅含有Na+、Mg2+、SO42-、Cl-四种离子,其物质的量浓度比为Na+:Mg2+:Cl-=3:5:5,若N
- 7牙齿中含珐琅质,它本身是一种坚硬物质,不容易受损.但口腔内酸性过强,酸性物质就会与珐琅质发生反应,从而损害珐琅质的表面而
- 8【题文】下列四幅风带图中,表示北半球西风带的是( )
- 9一位西方学者评论秦始皇:“建立了绝对的专制制度,这一制度以个人亲信为基础,而不考虑世系和教育。”从文明发展的角度看,这一
- 10中国古代就有嫦娥奔月的美好传说,但那毕竟是传说,还不是事实。只有到了今天“神舟”载人飞船发射成功,才圆了中国千年飞天梦。