题目
题型：不详难度：来源：
Many snakes eat birds’ eggs or frogs（青蛙）. Others eat pests（害虫）, mice and other animals that harm crops on farms. Because snakes do this valuable work, you should never kill one. It is too dangerous for you to kill a poisonous one. Leave that job to experts.
小题1: Which of the following groups of food is usually had by a snake?
| A．Mice, crops, birds’ eggs. |
| B．Pests, frogs, some animals, plants. |
| C．Birds’ eggs, frogs, all animals, other snakes. |
| D．Mice, frogs, pests, some animals, other snakes. |
| A．it is poisonous |
| B．it can do something useful for man |
| C．it will strike you in return |
| D．we are not experts |
| A．eating pests, mice and some harmful animals |
| B．doing harm to other animals |
| C．eating birds’ eggs and frogs |
| D．both A and C |
| A．have a better impression(印象) about snakes |
| B．like snakes |
| C．kill snakes with the help of experts |
| D．regard snakes as one of man’s best friends |
答案
小题1:D
小题2:B
小题3:A
小题4:A
解析
试题分析：提到蛇你会想到什么？有毒、可怕或者会伤人？其实蛇的食物链有很多，包括蛇、青蛙鸟蛋，更有老鼠等破坏庄稼的动物。从这一点来看，对人类还是有益的。它的攻击大多是出于自卫和猎食。那就顺其自然吧。
小题1:细节理解题。根据第二段可知，蛇吃其他的蛇、鸟蛋、青蛙、还吃害虫、破坏庄稼的老鼠和其他动物，但是不吃庄稼和植物，也不是所有的动物都吃，所以排除其他选项， 选D。
小题2:细节理解题。根据第二段可知，尽管有的蛇吃鸟蛋、青蛙，但是其他的一些蛇会吃破坏破坏庄稼的动物，对人类有帮助。并不是所有的蛇都有毒害，其他和主题不一致，而B（它能做一些对人类有益的事。）符合。
小题3:细节理解题。根据Others eat pests（害虫）, mice and other animals that harm crops on farms.可知，蛇可以做有宝贵的工作，因为有的蛇吃害虫、破坏庄稼的老鼠和其他动物。所以选A。
小题4:主题归纳题。文章介绍了优点蛇吃青蛙等，但是还有的蛇以破坏庄稼的害虫为食，对人类有贡献。所以选A。蛇有毒，所以不能把它当作好朋友来对待。只是对蛇看法转变而已。
核心考点
试题【Some snakes eat other snakes, even poisonous ones. The poison does not do them a】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Since water is so important to us, it is very important that the water we use should be clean , Otherwise, we might get some of the diseases that are carried by water Many microbes are harmful ,They are so small that we cannot see them ,These microbes must be removed or killed before the water is not clean, people who drink this water may get these diseases, Thus , to provide people with clean water, the government purifies the water.
Purification is a long process and consists of three stages: storing ,purifying and distributing ,The first stage is storing , Man-made lakes called reservoirs are used for this purpose ,Water from the rains ,other lakes, streams and rivers is collected in the reservoirs ,This water is usually dirty and muddy.
In the second stage shich is purifying , water from the reservoirs is filtered in a special pond, Stones, sand and other unwanted tiny things are caught in it, After that, tiny microbes are still present in the water ,These microbes are removed by “airing ”the water and by adding a chemical substance called chloring(氯)to the water ,This kills all the microbes in the water ,A fter this the water can be safely used for drinking.
The third stage is the distribution of the purified water to homes ,hospitals, offices ,factories and other places, This is done through a network of pipes of various sizes, These pipes must be make of a suitable material.
小题1:From Paragraph 1, we can learn that
| A．Rain has contained gases when it forms in the clouds |
| B．Dust and microbes are dissolved in rain when rain falls on the ground |
| C．The closer rain is to the ground, the more impure things it contains |
| D．Sand and mud are things rain collects when it falls through the air |
| A．All the microbes in water are harmful so water must be purified |
| B．some diseases can spread through drinking water if it is not clean |
| C．Water is safe to drink if only harmful microbes are removed from it |
| D．it is the govrnment’s responsibility to make drinking water clean |
| A．It is used through the whole process of purification |
| B．Only rain water can be collected and stored in it |
| C．Water collected can be stored and filtered in it |
| D．Water from them contains a lot of impure substances |
| A．to air the water | B．to catch tiny things |
| C．to kill microbes | D．to remove harmful gases |
| A．A news report | B．A book review | C．A magazine article | D．A school paper |
The researchers looked at data from ,11,499 children who took part in a large study, It showed that 507 who were slow to gain weight in the first eight weeks of life recovered fairly quickly and had almost caught up by age 2. Another group of 480 who were slow to gain between eight weeks and nine months continued to put on weight slowly until they were seven years ,but then had a sudden increase and caught up by age 13, The different pattems of recovery between the two groups were likely due to different reasons for slow weight gain ,the researchers said, All the children were still lighter and shorter than their peers by the time they were teenagers ,but within the normal range.
The findings highlight the importance of monitoring a baby’s weight and height gain during the first few weeks and months ,but not creating anxiety with parents of slow-growing babies, said the study leader Prof Alan Emond from the University of Bristol.
“In the past, a lot of parents have been caused unnecessary anxiety by heaith professionals and this is a positive and reassuring message.”He said in many cases of slow growth where children do not follow the standard’curve’(曲线)it is just because they are following their genetic potential.
Dr Simon Newell, vice-president of the Royal College of Paediatrics and Child Health, said he broadly agreed with the concluslons of the researchers but stressed that poor weight gain was something that needed to be monitored closely, “I would encourage parents to use growth charts but if measurements show your baby is smaller than averager it may be completely normal, ”he said.
小题1:What can we know from the findings of the research?
| A．All the cases of slow weight gain in the first months of the babies’ lives are caused by the same reason |
| B．Slow-growing babies will have the same height and weight with their peers by age13 |
| C．Many cases of children whose growth don’t meet the growing standard curve cannot be treated as abnormal |
| D．The findings won’t cause parents’ anxiety so monitoring a baby’s growth from his/her birth is unnecessary |
| A．It’s important to monitor a baby’s weight and height gain for new parents |
| B．New parents should feel anxious about their baby’s weight and height gain |
| C．Researches still couldn’t find the reasons for slow weight gain |
| D．All the children’s weight and height became normal by age 13 |
| A．Making sure something is certain to be true |
| B．Making someone calmer and less anxious |
| C．Confirming something is to happen again |
| D．Being sure that someone can be attracted |
| A．To some degree, growth charts can help parents monitor their babies’ weight gain |
| B．It’s abnormal for babies are smaller than average |
| C．He agreed with the researchers completely |
| D．Babies’ weight gain can only be monitored and measured by using growth charts. |
| A．tell us how to help babies grow faster |
| B．explain why babies are gain weight slowly |
| C．report on the findings of a research |
| D．reduce the anxiety of some parents |
Hydrogen is one of the building blocks of the universe ,Our own sun is basically ,a big ,dense cloud of the stuff ,And hydrogen can be used to create electricity for power ,heat and light.
The problem is that hydrogen is everywhere and nowhere at the same time , It does not exist as a material on its own ,but is always part of something else, So it has to be separated before it can be used.
Most commercial hydrogen in use now is created from natural gas , As oil will start to run out in around the year 2030.,it makes sense to produce as much hydrogen as possible as soon as we can ,But natural gas supplies will also begin to run out soon after, Another source is needed.
Researchers are now using electricity to make water into hydrogen ,Companies are working on the problem in their own areas ,The first commercial hydrogen ,”fuel cells”for computers and mobile phones have already come on to the market ,Auto companies have also invested over US ＄2billion in the production of hydrogen fuelled cars
Thd nations of a hydrogen fuelled planet would not fight over evergy recourses, There would be a great reduction in pollution ,The only by-product of creating hydrogen is pure drinking water—something that is very scarce in many parts of the world ,But that is not where the good news ends, Once the costs of producing hydrogen have been brought down ,it will possibly provide power for a third of the Earth ‘s population that has no electricity.
And electricity creates wealth, In South A frica over the last decade there has been a large programme of electrification, Thanks to the programme , people do not have to spend their days looking firewood to burn for heat, And with electric light , they can work long into the night.
Some scientists see radical changes in the way the human race co-operates, Hydrogen creates clectricity, and is also created by it. With dual use fuel cells, everyone who consumes energy could also produce it ,Late at night, a man drives home in London and connects his car into the “world-wide hydrogen web”, which it supplies with electricity ,A few hours later, a man in Beijing uses that electricity to power the hydrogen cell in his car, Hydrogen could be the first democratic energy source.
Like all dreams of the future, it seems very far away, But the threat of war and terrorism in the Middle East has made governments and businesses more aware of the need to edn oil dependency and spend more time and money on hydrogen resource, So maybe the threat of war is not a completely bad thing for the future of the human race.
小题1:What does the underlined word “it”in the last but one paragraph refer to?
| A．wealth | B．hydrogen | C．electricity | D．fuel |
| A．It has by-products |
| B．It has to be separated from other materials |
| C．It will make energy too cheap |
| D．It is too far away from us |
| A．To tell us that we produce energy while using hydrogen power |
| B．To tell us that hydrogen power does not produce pollution |
| C．To show hydrogen power can stop war |
| D．To show hydrogen power is cheap |
| A．skeptical | B．negative | C．indifferent | D．positive |
| A．war and energy |
| B．the future of hydrogen as an energy resource |
| C．the disadvantages of oil |
| D．How to end war |
Professor Taiju Matsuzawa wanted to find out why quite healthy in northern Japan appeared to be losing their ability to think and reason at a rather early age, and how the speed of getting old could be slowed down.
With a team of researchers at Tokyo National University, he set about measuring brain volumes of a thousand people of different ages with different jobs. Computer technology helped the researchers to get most exact measurements of the volume of the front and side parts of the brain, which have something to do with intellect and feelings, and decide the human character. As we all know, the back part of the brain, which controls task like eating and breathing, does not contract with age.
Contraction of front and side parts—as cells die off—was seen in some people in their thirties, but it was still not found in some sixty and seventy-year-olds.
Matsuzawa concluded from his tests that there is a simple way to prevent the contraction—using the head.
The findings show that contraction of the brain begins sooner in people in the country than in the towns. “Those with least possibility,” says Matsuzawa, “are lawyers, followed by university professors and doctors. White collar workers doing the same work day after day in government offices are, however, as possible to have contracting brains as the farm worker, bus driver and shop assistant.”
小题1:The team of doctors wanted to find out _____.
| A．at what point people grow mentally old |
| B．how to make people live longer |
| C．the size of certain people’s brains |
| D．which people are the most clever |
| A．an examination of farmers in northern Japan |
| B．tests given on a thousand old people |
| C．examining the brain volumes of different people |
| D．using computer technology |
| A．our brains contract as we grow older |
| B．one part of the brain does not contract |
| C．sixty-year-olds have better brains than thirty-year-olds |
| D．some people’s brains have contracted earlier than other people’s |
| A．most of us take more exercise |
| B．it’s better to live in the town |
| C．the brain contracts if it is not used |
| D．the more one uses his brain, the sooner he becomes old |
“The LF1300 is the world’s first mobile phone that is capable of reading books for the print-disabled, who otherwise could not enjoy them. This is not about making money but about continuing to put froth efforts to reduce the digital difference for the disabled,” LG Vice President said.
Its users can download about 300 audio (声音的) books from the Internet site of LG Sangam Library to their phones for free in two ways. One is to access the digital library’s Website on a computer designed for the blind to get the audio books and transfer them to cell phones. The other is to download the digital books directly with cell phones through the wireless net work by touching a hot key on the LF1300 phone.
On top of its unique feature of reading books, the LF1300 is no worse than the popular top-line phones in both outlooks and functionalities(功能性). The phone is armed with an MP3 player and a Bluetooth headset, enabling users to listen to the music or talk without a cord. The user interface（界面) of the LF1300 is also designed for the blind, enabling phone users to control it through a voice guidance system.
However, because the phone’s internal memory of 17MB is small even for a single audio book file, which takes up 80MB on average, a high-volume external memory is a must for the talking book services.
小题1: are allowed to buy the talking phone.
| A．Disabled people with a certificate |
| B．All the blind and poor-sighted people |
| C．The blind and poor-sighted with a certificate |
| D．Both healthy and disabled citizens |
| A．talking to the microphone |
| B．touching any key |
| C．touching its screen |
| D．touching the hot key |
| A．This is the first time LG Company has done something for the disabled. |
| B．Phone users don’t have to pay much to download the digital books. |
| C．LF1300 has a less attractive outlook than any other top-line phone. |
| D．The disadvantage of LF1300 is that it has too small internal memory. |
| A．A New Type of Cell Phone is on the Market |
| B．Mobile Phones Can Read Books for the Print-Disabled |
| C．The Disabled will Benefit from Cell Phone Producers |
| D．Advanced Technology Helps the Blind Read Books |
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