题目
题型：不详难度：来源：
The concept of solar power satellites, or SPS, first put forward in the 1960s, is still not widely known by the general public. For example, at many public exhibitions about energy, SPS is not even mentioned. This is mainly because very little money has been spent on SPS research
There are people who claim that SPS is unrealistic － because launch costs are much too high today; or because it is too far away. So why do we believe that it is important to continue to do researches on SPS? The reason is very simple.
Humans are going to need huge amounts of electric power in coming decades. Within 50 years the world population is expected to double, while economic growth will continue around the world, especially in the poorer countries. But existing energy sources already face serious problems. They are limited; they are polluted; they are dangerous. So 50 or 100 years from now, where is our power going to come from? Nobody knows. And so we believe that new large-scale possibilities should be studied further.
We must remember that humans have some choices concerning our future. To some extent we can choose the direction in which our civilization develops. And choices that are made in the coming decades － such as the energy sources that we will or will not use, will have major, long-term meaning for human life on earth. We believe that if research continues to show that SPS is environmentally and economically attractive, SPS will open the door to a much more attractive future for human civilization than any ground-based energy source, and one that the public will support and that young people will find challenging and exciting. Furthermore energy from SPS can be readily used in developing countries, as the SPS 2000 project will show, thus aiding economic development worldwide. In addition, by creating large commercial fund for space engineering, SPS will open the frontier of space to economic development, thus creating a limitless new field for the growth of the world economy.
小题1:Which of the following may be the best title for the passage?
| A．The Future Energy－ SPS | B．The Concept of SPS |
| C．Humans and SPS | D．Advantages of SPS |
| A．The research on SPS started in the 1960s is still not appreciated by the public. |
| B．The research is showing SPS can benefit environment and economy at present. |
| C．The energy from SPS is now being used in some developing countries. |
| D．The public don’t know about SPS because little time is devoted to the research. |
| A．the present serious energy problems |
| B．where to get energy sources in the future |
| C．the importance of controlling world population |
| D．the need to explore new energy sources |
| A．In time of peace prepare for war |
| B．Put the cart before the horse |
| C．One man’s meat is another man’s poison |
| D．Easier said than done |
答案
小题1:A
小题2:A
小题3:D
小题4:A
解析
小题1:主旨大意题。通读全文可知是关于SPS的未来的。
小题2:细节题。根据文章第一句The concept of solar power satellites, or SPS, first put forward in the 1960s, is still not widely known by the general public
小题3:主旨大意题。通读第三段可知未来能源缺乏是困扰地球的主要问题。
小题4:A意为：居安当思危；B：本末倒置；C：萝卜白菜各有所爱。D：说时容易做时难。通读全文作者未雨绸缪考虑未来能源紧缺的问题，提出了SPS计划。应该选A。
核心考点
试题【The concept of solar power satellites, or SPS, first put forward in the 1960s, i】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
In 1901，H. G. Wells, an English writer, wrote a book describing a trip to the moon. When the explorers landed on the moon, they discovered that the moon was full of underground cities. They expressed their surprise to the “moon people” they met. In turn, the “moon people” expressed their surprise. “Why,” they asked, “are you traveling to outer space when you don’t even use your inner space?”
H.G. Wells could only imagine travel to the moon. In 1969, human beings really did land on the moon. People today know that there are no underground cities on the moon. However, the question that the “moon people” asked is still an interesting one. A growing number of scientists are seriously thinking about it.
Underground systems are already in place. Many cities have underground car parks. In some cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The “Channel”，a tunnel connecting England and France, is now complete.
But what about underground cities? Japan’s Taisei Corporation is designing a network of underground systems, called “Alice Cities”. The designers imagine using surface space for public parks and using underground space for flats, offices, shopping, and so on. A solar dome would cover the whole city.
Supporters of underground development say that building down rather than building up is a good way to use the earth’s space. The space, they say, can be used for farms, parks, gardens, and wilderness. H.G. Wells “moon people” would agree. Would you?
小题1:The explorers in H.G. Well’s story were surprised to find that the “moon people” .
| A．knew so much about the earth |
| B．understood their language |
| C．lived in so many underground cities |
| D．were ahead of them in space technology |
| A．Offices, shopping areas, power stations |
| B．Tunnels, car parks, shopping areas |
| C．Gardens, car parks, power stations |
| D．Tunnels, gardens, offices |
| A．Alice Cities—cities of the future |
| B．Space travel with H.G. Wells |
| C．Enjoy living underground |
| D．Building down, not up |
Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back. Plants certainly cannot run away, and they lack teeth and claws. But plants can defend (保护) themselves by using both physical and chemical means.
Some plants have their own ways to keep animals away. For example, the leaves of the holly plant have sharp spines (刺) that discourage grass-eating animals. Holly leaves on lower branches have more spines than leaves on upper branches. This is because the lower leaves are easier for most animals to reach.
Some plants, such as the oak tree, have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material; eating such grasses wears down the animal"s teeth.
Many plants also have chemical defenses. Some plants produce chemicals that taste bitter or cause an unpleasant reaction. Some plants may fight against an attack by increasing the production of these chemicals. When a caterpillar (毛虫) bites a tobacco leaf, the leaf produces a chemical messenger. This messenger sends to the roots the information to produce more nicotine. The higher levels of nicotine discourage the caterpillar.
Many plants depend on both physical and chemical defenses. A certain plant in China, for instance, has prickly (多刺的) leaves, and each prickle contains poisonous venom (毒液) A single experience with this kind of plant will teach an animal to stay away from it in the future.
小题1:To defend themselves, oak trees use________.
| A．chemical means | B．physical means |
| C．bitter chemicals | D．sandy materials |
| A．Its leaves fight against the attack by physical means. |
| B．Its roots send a messenger to discourage the caterpillar. |
| C．Its roots increase the production of nicotine when it is attacked. |
| D．Its leaves produce poisonous sand to drive the caterpillar away. |
| A．Plants and Animals |
| B．How Plants Defend Themselves |
| C．Attacks and Defenses |
| D．How Animals Eat Plant Leaves |
Why should mankind explore space? Why should money, time and effort be spent exploring and researching something with so few obvious benefits? Why should resources be spent on space rather than on conditions and people on Earth? These are questions that, understandably, are very often asked.
Perhaps the best answer lies in our genetic makeup (基因构成) as human beings. What drove our ancestors to move from the trees into the plains, and on into all possible areas and environments? The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible.
Nearly every successful civilization(文明) has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be completely destroyed by the danger. With knowledge, we can lessen its effects.
Exploration also allows minerals and other potential (潜在的) resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions(物质财产). Knowledge or techniques have been gained through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spin-offs including improvements in earthquake prediction, in satellites for weather forecasting and in communications systems. Even non-stick pans and mirrored sunglasses are by-products (副产品) of technological developments in the space industry!
While many resources are spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist.
While Earth is the only planet known to support life, surely the adaptive(适应的) ability of humans would allow us to live on other planets. It is true that the lifestyle would be different, but human life and cultures have adapted in the past and surely could in the future.
小题1:Why does the author mention the questions in Paragraph1?
| A．To express his doubts. |
| B．To compare different ideas. |
| C．To introduce points for discussion. |
| D．To describe the conditions on Earth. |
| A．Humans are nature-born to do so. |
| B．Humans have the tendency to fight. |
| C．Humans may find new sources of food. |
| D．Humans don"t like to stay in the same place. |
| A．survival chances | B．potential resources |
| C．unexpected benefits | D．physical possessions |
| A．Our genetic makeup. | B．Resources on the earth. |
| C．The adaptive ability of humans. | D．By-products in space exploration. |
| A．Space exploration has created many wonders. |
| B．Space exploration provided the best value for money. |
| C．Space exploration can benefit science and technology. |
| D．The Exploration may help us avoid potential problems on Earth. |
Cellphones: is there a cancer link?
Could your cellphone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and wi-fi could be responsible for a range of illnesses, from rashes to brain tumors.
Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there’s a greater than 95 percent chance that power lines can cause childhood leukemia(白血病). Also there’s a greater than 90 percent chance that cellphones can cause brain tumors. “It’s apparent now that there’s a real risk,” said Carpenter.
But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology(流行病学) at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don’t support warning labels for cellphones,” said Linet. “We don’t have the evidence that there’s much danger.”
Studies so far suggest a weak connection between EMFs(电磁场) and illness — so weak that it might not exist at all. A multinational investigation of cellphones and brain cancer, in 13 countries outside the US, has been underway for several years. It’s funded in part by the European Union, in part by a cellphone industry group. The final report should come out later this year, but data so far don’t suggest a strong link between cellphone use and cancer risk.
小题1:From the passage we can learn that some people are worried because .
| A．they have evidence the use of cellphone can lead to cancer. |
| B．they make a fuss over cellphone use. |
| C．some expert has given a warning. |
| D．cellphones are responsible for brain tumors. |
| A．the worrying is unnecessary. |
| B．cancer-warning labels should be on cellphones. |
| C．there is a link between cellphones and cancer. |
| D．cellphones have nothing to do with cancer. |
| A．started. | B．kept on. | C．gone on. | D．in progress. |
| A．Optimistic. | B．Objective. | C．Disapproving. | D．Casual. |
Hello, you guys! Do you want to make e-pals via the Internet and have fun? Here’s some advice for you to follow. First take a look at www. Spoton. Community. Click on international pen-pal sites to find some of our favorite international e-pal and pen-pal web sites. Don’t forget: some e-pal services cost money and some are safer than others. Remember to read a web site safety warning before you join!
KidFu （www. Kidfu. com）says it is the safest place online for kids to chat, play games and make friends. Get your parents to help you register and then you can write things about yourself or read what other kids have written. There’re also chat monitors that make sure that the online chat rooms are safe and friendly. KidFu costs money, but the first month is free.
If you join e-PALS （www. Epals. com), you can choose a pen-pal from over 65,000 kids from 191 countries. You can also find information about how teachers can get pen-pals for their pupils. Or if you want to start sending e-mails right now, go to Europe Pages（www. europa-page. com）. Lots of young people have written their names, interests, home countries and their e-mail addresses. Just click on a name and start writing!
Well, however, there are tips that you should keep in mind: never be absorbed in the line for too long, so stay there not more than 2 hours once. Never go out with your pals without your parents’ permissions. Let your parents know about what you are doing. Then, have fun!
小题1:If you want to choose a safer web site, you"d better click on .
| A． www. europa-page. Com | B．www. Spoton. de |
| C．www. e-pals. com | D．www. Kidfu. com |
| A．KidFu | B．Europe Pages | C．e-PALS | D．spoton. community |
| A．you can start sending your e-mails immediately |
| B．you can choose more pen-pals from many countries |
| C．it is free and you can find names of different countries |
| D．it is the safest one among all the web sites |
| A．a person in the web site to give safe online advice |
| B．a police officer to keep order in the chat rooms |
| C．an engineer in charge of controlling the chat |
| D．a software to keep online chatting clean and safe |
最新试题
- 1暖水瓶的瓶胆夹壁中是真空，小明想利用它来探究真空能否传声．他把音乐贺卡里的电子发生器放入瓶中，根据听到的声音进行判断．在
- 2“小时偷针，大时偷金”这句话告诉我们[ ]A．一般违法与犯罪之间没有不可逾越的鸿沟B．一般违法必然发展为犯罪C．
- 3【题文】（10分）阅读材料，完成下列问题。材料一 左图是中亚局部区域图，右图为左图中A地各月气温降水量统计图。
- 4如图，平面直角坐标系中，直线y＝－x＋8分别交x轴、y轴于点B、点A，点D从点A出发沿射线AB方向以每秒1个单位长的速度
- 5_____ Sunday evening I watched TV. I ______ a talk show.A. I
- 6对于Mg、Mg2+的说法正确的是（ ）A．电子层数相同B．电子数相同C．属同一种元素D．属于同种粒子
- 7He was walking along the sands _______ he saw a big foot-pri
- 8下列词语中加点字的读音,与所给注音全都相同的一项是A．量liáng量程量度量具量体裁衣B．了liǎo了解了望了却了事C．
- 9一个数除以3余2，除以4余1，则这个数除以12的余数是______．
- 10下列各句中，加点的成语使用正确的一项是（ ）A．现在我们单位职工上下班或步行，或骑车，为的是倡导绿色、地毯生活。
热门考点
- 1已知，(且)．（1）过作曲线的切线，求切线方程；（2）设在定义域上为减函数，且其导函数存在零点，求实数的值．
- 2如图是下列一个立体图形的三视图，则这个立体图形是A．圆锥B．球C．圆柱D．正方体
- 3（10分）按要求填空：（1）1mol羟基的电子数是 ；（2） 的分
- 4（8分）如图11，一张矩形纸片ABCD，其中AD=8cm，AB=6cm，先沿对角线BD折叠，点C落在点C′的位置，BC′
- 5小明和小刚用如图所示的两个转盘做配紫色游戏，游戏规则是：分别旋转两个转盘，若其中一个转盘转出了红色，另一个转出了蓝色，则
- 6在中,已知,则的面积是（ ）A．B．C．或D．
- 7意识不仅能反映事物的外部现象，而且能够把握事物的本质和规律。
- 8五四运动取得的初步胜利包括①罢免三个卖国贼的职务②收回了山东的一切权利③北洋政府被迫释放被捕的学生④中国代表拒绝在对德
- 9下图反映出中国1978—2008年中国进出口总额及占GDP比重变化图①进出口贸易总额持续增长 ②城市
- 10有下列物质：①Cl2 ②Na2O2 ③NaOH ④HCl ⑤H2O2 ⑥MgF2 ⑦NH4Cl(1)只由离子