题目
题型：不详难度：来源：
Less than 10 years ago I drove to a thinly populated section of my town, lay down in the middle of the road and watched an attracted meteor shower(流星雨). The area was short of homes, street lights and traffic. If I did that today, I wouldn’t be able to see the meteor shower as well, and I would surely be run over by a car.
Nowadays scientists are finding light pollution can be almost as bad as carbon dioxide pollution. If you’ve ever taken a flight at night, the view is beautiful, but you must remember that all the light you see is wasted electricity. The crew of the space shuttles see an even bigger picture of ho
w extensive the wasted electricity is worldwide.Additionally, electricity needs to be generated, and the generation of electricity creates pollution by giving off greenhouse gases. This affects the air we breathe and our quality of life.
Scientists are also studying the effects of light pollution on wildlife. Thousands of birds die each year when they crash into highly lighted buildings, as they become puzzled by the light. It has been long known that tiny sea turtle hatchlings become lost and follow lights on the shore instead of heading towards the sea.
Fortunately, light pollution is one of the easiest sources of pollution that can be corrected without a negative effect. Following some guidelines and a little searching on Google can give you many ideas on how to reduce your contribution to light pollution.
小题1:The author tells the story in the second paragraph mainly to _________.
| A．remember the past beauty of the town. |
| B．stress the advantages of less pollution |
| C．show the great changes of the town |
D．prove the bad effects of li ght pollution |
| A．to try to reduce unnecessary light. |
| B．not to ignore the beauty around. |
| C．to set proper light for animals |
| D．not to destroy the animal’s living conditions. |
| A．Light pollution is difficult to deal with. |
| B．Light pollution is a threat to some animals. |
| C．Light pollution has nothing to do with global warming |
| D．Astronauts can’t see clearly in space due to light pollution. |
agraph?| A．The author’s contribution to light pollution |
| B．Other sources of light pollution |
| C．Ways of reducing light pollution |
| D．More bad effects of light pollution |
答案
小题1:D
小题1:A
小题1:B
小题1:C
解析
核心考点
试题【As the population of the planet increases, so does the number of homes, business】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Allan Friedman, the research director, says, “All wireless companies do some location tracking as part of their networks． This information is usually stored by the companies, not the devices, and there are laws to protect it． Law enforcement（执法） agencies, for example, have to have a fairly high standard before it can access that data． And the phone company is also prohibited from selling that information．
Now, two researchers report that location tracking information is being stored directly on Apple devices． They said Apple’s newest operating systems gather global positioning system and timestamp information． The information is stored on the device in a file that is also uploaded （上传） to any computer that the device is connected to． The researchers say the information is available to anyone who has access to the device or computer．
Allan Friedman says, “This raises additional concerns． There’s the idea tha
t because it’s on my phone and on my computer, rogue applications（恶意程序） that I pay for or that I’m tricked into downloading may be able to access this data and somehow misuse it．”Apple says it is “not tracking the location of your iPhone”． It is simply keeping a database of Wi-Fi hotspots and cellphone towers near the user’s location． This information is meant to help the iPhone quickly find its location when needed．
Letters have been sent to some of the leading mobile device developers, including Apple and Google． The letters asked for more information about their location tracking systems． Allan Friedman calls this an important start to strengthening privacy laws． He says, “There aren’t strong controls over things like location information, what they are doing with it, how long they are keeping it． And perhaps the most important question is, is my location data with other facts about me?”
小题1:Why did American lawmakers investigate the use of location-tracking systems on cell-phones?
| A．Because the systems can store users’ information |
| B．Because many users have suffered loss after using them． |
| C．Because it is thought to threaten users’ privacy． |
| D．Because many reporters have shown the problem of the systems． |
A．wireless compa nies focus on personal privacy． |
| B．people are forbidden to get access to private data at will |
| C．phone companies may sell private information secretly |
| D．customers may ask wireless companies to locate their tracking |
| A． Location tracking information is stored online． |
| B．Apple’s newest operating systems collect all kinds of information． |
| C．Location tracking information may be uploaded to any iPhone． |
| D．Apple’s newest operating systems may reveal the private information of users． |
| A．Apple denies that it tracks the location of users． |
| B．The researchers may misunderstand the Apple’s systems． |
| C．The global positioning system is to blame for rogue applications． |
| D．The iPhone can quickly find its location by using its user’s information． |
There are a couple of reasons why bats rest this way. First of all, it puts them in a position for takeoff. Unlike birds, bats can’t fly into the air from the ground. Their wings don’t produce enough lift to take off from a dead stop, and their hind legs are so small and underdeveloped that they can’t run to build up the necessary takeoff speed. Instead, they use their front claws to climb to a high spot, and then fall into flight.
During the hours when most enemies are active, bats gather where few animals would think to look and most can’t reach. This allows
them to disappear from the world until night comes again. There’s also little competition for these resting spots, as other flying animals don’t have the ability to hang upside down.Bats have a unique physiological adaptation that lets them hang around this way without using a
ny energy. For you to hold your fist around an object tight, you contract（紧缩）several muscles in your arm, which are connected to your fingers by ten
dons（腱）；as one muscle contracts, it pulls a tendon, which pulls one of your fingers closed. A bat’s talons（爪）close in the same way, except that their tendons are connected only to the upper body, not to a muscle. To hang upside down, a bat pulls its claws open with other muscles. To get the talons to take hold of the surface, the bat simply lets its body relax. The weight of the upper body pulls down on the tendons connected to the talons, causing them to hold tight. Therefore, the bat doesn’t have to do anything to hang upside down.小题1:Bats hang upside down because________．
| A．they haven’t developed a pair of strong claws | B．they can’t start to fly from the ground directly |
| C．they have no hind legs to support their body | D．they can’t find quiet places to stay during the day |
| A．is to save their energy for night movement | B．is a way to fight against flying animals |
C．is a great way to hide from danger | D．is a skill to compete for the flying places |
| A．Because their upper body is light. |
| B．Because they have strong muscles. |
| C．Because their talons are linked to muscles tightly. |
| D．Because their tendons are linked to their upper body. |
| A．The living habits of bats. | B．How and why bats  hang upside down. |
| C．The importance of bats’ hanging upside down. | D．How bats use their energy at night. |
Taking a look at why cloning might be beneficial, among many cases, it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning. If the clone was free of genetic limitations. Then the other clone would be as well. The latter could foe inserted in the woman and allowed to ripen to term. Moreover，cloning would enable women, who can’t get pregnant, to have children of their own.
Cloning humans would also mean that organs could be cloned, so it would be a source of perfect transfer organs. This, surely would be greatly beneficial to millions of unfortunate people around the world that are expected to lose their lives due to failure of single(or more) organ(s）.It is also arguable that a ban on cloning may be unlawful and would rob people of the right to reproduce and limit the freedom of scientists.
Arguments against cloning are also on a perfectly practical side. Primarily, I believe that cloning would step in the normal “cycle”of life. There would be a large number of same genes., which reduce the chances of improvement，and, in turn, development-the fundamental reason how living things naturally adapt to the ever-changing environment. Life processes failing to do so might result in untimely disappearance. Furthermore, cloning would make the uniqueness that each one of us possesses disappea. Thus, leading to creation of genetically engineered groups of people for specific purposes and, chances are, that those individuals would be regarded as “objects” rather than people in the society.
Scientists haven’t 100 percent. guaranteed that the first cloned will be normal. Thus this could result in introduction of additional limitations in the human “gene-pool”.
Regarding such arguable topics in “black or white” approach seems very innocent to me personally. We should rather try to look at all “shades: of it. I believe that cloning is only legal if its purpose is for cloning organs, not humans. Then we could regard this as for “saving life” instead of “creating life”. I believe cloning humans is morally and socially unacceptable.
小题1:Which of the following is true according to the passage？
| A．Genetic limitation will be beneficial for some women |
| B．A large number of genes will prevent us from developing |
| C．Prohibition of cloning might limit the freedom of scientists |
| D．First cloned humans might be normal according to scientists |
| A．Cloning should be entirely banned |
| B．Cloning should be used in creating life |
| C．Cloning will take away the right to reproduce |
| D．Cloning is acceptable if it is used for cloning organs |
| A．In a story book. | B．In a magazine. | C．In a science fiction | D．In a brochure |
ips with more than a limited number of people. No matter how hard the Internet tries to put you in communication, its best efforts will be defeated by your mind.The problem is twofold（双重的）. First, there is a limit on the number of people we can hold in mind and have a meaningful relationship with. That number is about 150 and is set by the size of our brain. Second, the quality of your relationships depends on the amount of time you invest in then. We invest a lot in a small number of people and then distribute what’s left among as many others as we can. The problem is that if we invest little time in a person, our engagement with that person will decline until eventually it dies into “someone I once knew”.
This is not, of course, to say that the Internet doesn’t serve a socially valuable function. Of course it does. But the question is not that it allows you to increase the size of your social circle to include the rest of the world, but that you can keep your relationships with your existing friends going even though you have to move to the other side of the world.
In one sense, that’s a good thing. But it also has a disadvantage. If you continue to invest in your old friends even though you can no longer see them, then certainly you aren’t using your time to make new friends where you now live. And I suspect that probably isn’t the best use of your time. Meaningful relationships are about being able to communicate with each other, face to face. The Internet will slow down the rate with which relationships end, but it won’t stop that happening eventually.
小题1:The number of friends we can keep relationships with is decided by__________.
| A．the Internet | B．the time we have | C．the place we live | D．the mind |
nd paragraph probably means “__________”.| A．appointment | B．connection | C．interview | D．agreement |
| A．the Internet helps to keep in touch with friends far away |
| B．the Internet determines the quality of social relationships |
C．the Internet greatly increases the size of social circles |
| D．the Internet is of no value in social communication |
| A．To keep in touch with old friends when we have moved away. |
| B．To chat with friends often on the Internet. |
| C．To make more new friends face to face. |
| D．To stop using the Internet to make new friends. |
| A．He thinks it useless | B．He is hopeful of it. |
| C．He approves of it. | D．He doubts it. |
Considering that 15 percent of American children aged 6 to 18 are overweight, supporters say more money and thought must be put into phys ed curriculum. In many cases, that may mean not just replacing the old gym-class model with fitness programs but also starting up phys ed programs because school boards often "put P.E. on the chopping block (砧板), cutting it entirely or decreasing its teachers or the days it is offered," says Alicia Moag-Stahlberg, the executive director of Action for Health Kids. The difference in phys ed programs is partly due to the lack of a national standard. "Physical education needs to be part of the core curriculum," she added.
The wisdom of the new approach has some scientific support. Researchers at the University of Wisconsin have showed how effective the fit-for-life model of gym class can be. They observed how 50 overweight children lost more weight when they cycled and skied cross-country (越野)than when they played sports. The researchers also found that teaching sports like football resulted in less overall movement, partly because some reluctant（不情愿的）students were able to sit on the bench.
Another problem with simply teaching group sports in gym class is that only a small percentage of students continue playing them after graduating from high school. The new method teaches skills that translate to adulthood.
小题1:According to the passage, what is usually taught in the old gym class?
| A．Lift weights | B．Climb a rope | C．Cycle | D．Have a balanced diet |
| A．Schools do not pay enough attention to P. E.. |
| B．Schools welcome P. E. but do not have time for it. |
| C．Schools put P.E. in the first place. |
| D．Schools cut down other subjects’ time for P. E.. |
| A．More teenagers are overweight. |
| B．Traditional group sports teaching is not effective. |
| C．Students need to learn some skills to help them lead a physically active life. |
| D．Phys ed programs need less money to support. |
| A．Two | B．Three | C．Four | D．One |
| A．The Phys ed teaches group sports. |
| B．The Phys ed provides more fitness programs. |
| C．The Phys ed teaches tools and skills which could be used in the future life. |
| D．The Phys ed has more support from the government. |
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