题目
题型：不详难度：来源：
Those are questions that scientists hope to answer. They recently set out around the world in search of those and other long-missing amphibians. An amphibian is an animal that spends part of its life in water and part on land. Frog, toads(蟾蜍), and salamanders are amphibians.
The experts are looking for about 100 species. They are searching at least 14 countries on five continents. They will look for the salamander in North America. They hope to find the scarlet frog in South America. They’re also looking for species in Africa, Asia and Australia.
Scientists are hopeful that they’ll find the amphibians—and soon! If the creatures are out there, they may need help. Many amphibians are endangered. The animals face many dangers including pollution and diseases. People cut down the forests where they live.
“If researchers can find the missing creatures, they might be able to figure out how to save them,” explains expert Robin Moore. He began searching for the amphibians earlier this month.
“This search will tell us a lot about how amphibians are doing,” Moore told WR News. “I don’t know what we will find, but that makes the search even more exciting.”
Lost in the Wild
Scientists’ hunt for missing amphibians is under way. Read about some of the species they hope to find.
Turkestanian salamander
This salamander is a mystery to scientists. Experts found a few of them more than 100 years ago, but none have been seen ever since.
Gastric brooding frog
Experts first discovered this frog in 1914 in eastern Australia. It may be extinct because of disease and habitat loss.
Rio Pescado stubfoot toad
Last sighting: 1995, in South America
Scientists hope to find this spotted toad in rivers and rainforests in Ecuador. The animal faces threats including pollution and disease.
小题1: Which of the following animals hasn’t been seen for over a century?
| A．Rio Pescado stubfoot toad. |
| B．Gastric brooding frog. |
| C．Turkestanian salamander. |
| D．Scarlet frog. |
| A．the scarlet frog used to live in Africa |
| B．researchers have no way to save amphibians |
| C．the scientists will search 14 countries at most |
| D．Robin Moore has begun his search for amphibians |
| A．Because they want to rescue the missing amphibians. |
| B．Because they want to set up a scientific program. |
| C．Because they want to do a scientific research on the missing amphibians. |
| D．Because they want to publish a report about the missing amphibians on WR News. |
| A．It’s hopeful. | B．It’s interesting. |
| C．It’s tiring. | D．It’s dangerous. |
答案
小题1:C
小题2:D
小题3:A
小题4:B
解析
小题1:C 细节理解题。由文中的Turkestanian salamander Last sighting: 1909, in Asia可知答案。
小题2: D 细节理解题。由第五段中的He began searching for the amphibians earlier this month.可知，Robin Moore已经开始寻找濒危两栖动物了。
小题3:A 细节理解题。由第五段第一句话可知，科学家们发起这项寻找濒临灭绝的两栖动物的活动的目的是拯救它们。故答案为A。
小题4: B 推理判断题。由第六段“This search will tell us a lot about how amphibians are doing,” Moore told WR News. “I don’t know what we will find, but that makes the search even more exciting.”可知，Moore认为这个寻找过程会很有趣。
核心考点
试题【Have you seen a yellow-and-black salamander (火蜥蜴)? How about a scarlet frog? Sci】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Authorities at the best Indian Institute of Technology (IIT) in Mumbai said students had stopped socializing and many were late for morning classes or slept through them. “Now, a student doesn’t even know who lives two doors away from him because he is so busy on the Internet,” said Prakash Gopalan, dean of student affairs. “The old dormitory culture of companionship and socializing among students is gone. This is not healthy in our opinion.”
IIT-Mumbai, with about 5,000 students, is one of seven IITs across India which are considered to be among the finest engineering schools in the world. They are also a talent pool for global technology giants. But their hard courses, tough competition and lonely campus lifestyle have taken an effect on students. Depressive and dysfunctional(不正常的) lifestyles are known to be common among IIT students, and at least nine have committed suicide in the past five years. Students have unlimited free Internet access in their boarding houses to help them in their studies, but many also use it to surf, chat, download movies and music, blog and for gaming.
Starting Monday, Internet access will be banned between 11 p.m. and 12.30 p.m. at IIT-Mumbai’s 13 boarding buildings to encourage students to sleep early and to try and force them out of their “shells”, Gopalan said. But the move has not gone down well with students who say they hate their lives being regulated. “Now they will say we need to listen to a lullaby(摇篮曲) to go to sleep,” said Rajiv, an electronics student.
小题1: What measure has been taken in IIT- Mumbai?
| A．Students have unlimited free Internet access in their dormitories. |
| B．Students are forbidden to surf the Internet. |
| C．Internet access is unavailable in deep night. |
| D．Students must go to bed before 11 p.m. |
| A．sleep through their lessons |
| B．break away from the Internet |
| C．go to sleep along with music |
| D．stop surfing, make friends |
| A．the banning order causes some complaints among the students |
| B．all electronics students hate the banning order |
| C．more students prefer listening to music to surf- ing the Internet |
| D．there is no Internet access on the IIT campus even |
“Until now most of the thinking has suggested that to be a good competitor in the forest, you have to be a big plant,” says Queen’s Biology professor Lonnie Aarssen. “But our research shows it’s virtually the other way around.”
Previous studies showed that larger plant species monopolize(垄断) sunlight, water and other resources, limiting the number of smaller plant species that can exist around them. But the research has proved that this is not generally the case in natural vegetation.
In the Queen’s project, PhD student Laura Keating targeted the largest “host plants” of 16 woody plant species growing in the Okanogan Valley, British Columbia. The research team calculated the number and variety of plants that neighbored each large host plant. They then randomly selected plots without host plants and calculated the plant species there as well. The research showed that the massive trees have no effect on the number of species with which they coexist.
Smaller plants have many advantages over their overbearing neighbors, Professor Aarssen notes. Larger species generate physical space niches under their shelters where smaller species grow well. Smaller plants are much more effective than large trees at using available resources. They also produce seeds at a much younger age and higher rate than their bigger counterparts, and settle down much more quickly—thuscompeting with the newly-born plants of larger species.
小题1: What’s the main idea of the text?
| A．Smaller plants may have many advantages over their neighbors. |
| B．In the plant world, the bigger is better than the smaller one. |
| C．To be a good competitor in the forest, you have to be a small plant. |
| D．Queen’s University’s students made a new research. |
| A．large and small plants can grow together in harmony |
| B．larger plant species limit their smaller neighbors’ growth |
| C．small plant species have their own advantages |
| D．large and small plant species can never coexist |
| A．Larger plant species limit the number of smaller ones around them. |
| B．Smaller plants can limit the number of plant species around them. |
| C．Smaller plants produce seeds at a higher rate than their bigger counterparts. |
| D．Larger trees are more effective than small plants at using available resources. |
a. Randomly selected plots without host plants and-calculated the plant species.
b. Calculated the number and variety of plants that neighbored each large host plant.
c. Selected the largest individuals or "host plants" of 16 woody plant species.
| A．a, b, c | B．c, b, a |
| C．b, c, a | D．a, c, b |
Sharks, in particular, are “in” these days. Thanks to good public policy and famous stars such as Jackie Chan and Ang Lee, killing sharks for fin soup is no longer cool.
The demand for shark fins has been rising for decades, threatening sharks with extinction(灭绝)—up to 100 million sharks are killed each year just for their fins. But we have started to reverse the trend, particularly in many areas of the United States and overseas where restaurants once proudly provided delicious shark fins on the menu.
In California, a ban on the sale and possession of shark fin soup has gone into effect this year through the efforts of Wild Aid and other organizations.
Overseas marketing and public efforts featuring posters on public transportation systems and TV ads have been underway for the past few years. These efforts all show signs of success, on both the supply side and the demand side of trade in shark fins.
Actually, stopping the killing of sharks is part of a broader movement to stop the killing of wild animals and the buying and selling of wildlife products. These products come from hunting elephants, tigers and rhinos, besides killing marine life.
Whether it is shark fin soup or ivory piano keys, killing animals is big business. The hunting of elephants in search of ivory tusks for luxury(奢侈的)goods has become a fullscale war. The decrease of African elephant populations is alarming. Together with international partners, the United States is leading the worldwide effort to reduce demand for highend products that rely on killing animals.
小题1:The underlined word “reverse” in Paragraph 3 probably means ________.
| A．show | B．keep |
| C．follow | D．change |
| A．Jackie Chan and Ang Lee make fin soup popular |
| B．a lot of wild animals have been killed for products |
| C．Steven Spielberg"s Jaws inspires us to protect sharks |
| D．the number of African elephants has been increased |
| A．More animals for highend products will be saved. |
| B．People have kicked the habit of having shark fin soup. |
| C．Shark fins will not be available any more in restaurants. |
| D．Global efforts have succeeded in stopping killing wild animals. |
Some doctors now think that the internal fat surrounding important organs like the heart or liver could be as dangerous as the external fat which can be noticed more easily.
“Being thin doesn"t surely mean you are not fat，” said Dr Jimmy Bell at Imperial College. Since 1994, Bell and his team have scanned nearly 800 people with MRI machines to create “fat maps” showing where people store fat.
According to the result, people who keep their weight through diet rather than exercise are likely to have major deposits of internal fat, even if they are slim.
Even people with normal Body Mass Index scores can have surprising levels of fat deposits inside. Of the women, as many as 45 percent of those with normal BMI scores (20 to 25) actually had too high levels of internal fat. Among men, the percentage was nearly 60 percent.
According to Bell, people who are fat on the inside are actually on the edge of being fat. They eat too many fatty and sugary foods, but they are not eating enough to be fat. Scientists believe we naturally store fat around the belly first, but at some point, the body may start storing it elsewhere.
Doctors are unsure about the exact dangers of internal fat, but some think it has something to do with heart disease and diabetes. They want to prove that internal fat damages the body"s communication systems.
The good news is that internal fat can be easily burned off through exercise or even by improving your diet. “If you want to be healthy, there is no short cut. Exercise has to be an important part of your lifestyle，” Bell said.
小题1:What is this piece of news mainly about?
| A．Thin people also have troubles. |
| B．Internal fat is of no importance. |
| C．Internal fat leads to many diseases. |
| D．Thin people may be fat inside. |
| A．being slim doesn"t mean you are not fat inside |
| B．internal fat is the cause of heart disease and diabetes |
| C．being slim is not dangerous at all |
| D．the exact dangers of internal fat |
| A．People with heart disease all have internal fat. |
| B．People can get rid of internal fat by improving diet. |
| C．Men are more likely to have too much internal fat. |
| D．Exercise can help to reduce the internal fat. |
Professor Anne Bamford，of the University of the Arts，London，studied the effectiveness of 3D content in 15 schools across seven countries，including the UK.Pupils in 3D classes can remember more than those in the 2D classes after four weeks，improving test scores by an average of 1 7 percent compared with eight percent for 2D lessons.They gave more detailed answer to the tasks and were more likely to think in 3D, using hand gestures and mime(模仿动作) to answer the test questions successfully.
The teachers commented that the pupils in the 3D groups had deeper understanding，increased attention span, more motivation and higher engagement in the lessons.
Children are used to 3D with the rise of computer games that use the technology90 percent of those in the study had seen a 3D film.Schools would need 3Denabled projectors(投影仪)，laptops with good picture capabilities,3D software and glasses for children to introduce animations(动作) into classrooms.
But Danny Nicholson，an educationist，said the technology would be impractical to use inschools and could be costly.He said，“While I think the idea of 3D technology is very interesting，I worry that 3D is a bit of an expensive gimmick(小玩意儿)．There are a few cases where a true3D image might help，but most of the time，good 2D models that can be moved would be just aseffective.”
In the US，one school district in Colorado is already in the process of having 1,000 3Dprojectors fixed in classrooms.And the University of Caledonia, which carries out scientific research into the Lake Tabon Basin, has used 3D presentations with Grade Six pupils.Those who watched the 3D presentations were more engrossed and reported a general increase in their interest in science compared with students who watched the 2D version.
小题1:What is the main idea of the first three paragraphs?
| A．There are slight differences between 3D and 2D images. |
| B．Pupils perform better when 3D images are used in classes. |
| C．Schools have difficulties in making full use of 3D technology. |
| D．3D technology is always more effective than 2D technology. |
| A．is of no help in classes |
| B．has a bright future in classes |
| C．is more practical than 2D models |
| D．may not be affordable for schools |
| A．3D technology will replace 2D models in the future. |
| B．Many pupils are now more Interested In science than before. |
| C．Teachers will use the 3D technology through specific training. |
| D．3D will soon be put into use in one school district in Colorado. |
| A．absorbed | B．annoyed |
| C．relaxed | D．confused |
最新试题
- 1《齐鲁晚报》报道：“心情不好的时候就去捏捏方便面吧。”近日，某论坛中出现这样一篇帖子，跟帖者众多。心情压抑了去超市以捏碎
- 2已知集合均为全集的子集，且,,则（ ）A．B．C．D．
- 3根据我国宪法规定，在各少数民族聚居的地方实行区域自治，设立自治机关，行使自治权。下列关于自治机关说法正确的是A．享有行政
- 4建造一个容积为8立方米，深为2米的长方体无盖水池，如果池底造价为120元/平方米，池壁造价为80元/平方米，那么水池的总
- 5中国共产党是中国特色社会主义事业领导核心。 （ ）
- 6下图为某三角洲上河流部分河段示意图，实线和虚线分别表示该河段河面在7月和1月的平均宽度。据此回答下列各题。小题1:下列关
- 7在平直公路上，以速度v0=12 m/s匀速前进的汽车，遇紧急情况刹车后，轮胎停止转动在地面上滑行，经过时间t=1.5s汽
- 8下面能正确表达厂长本意的一项是[ ] 小王一天没来上班，厂里有人说小王要跳槽。到晚上，厂长到小王家与小王谈了很
- 9_____ is good for both young and old people.A. The walkB. Wa
- 10下列各句中，没有语病的一项是（ ）A．近视患者都应当接受专业医师的检查，选择合适的眼镜，切忌不要因为怕麻烦、爱漂亮
热门考点
- 1中央经济工作会议指出“2013年我国经济社会发展具备很多有利条件和积极因素，同时经济发展面临的困难仍然较多，各种挑战不能
- 2根据下面内容，仿照画线的句子，在横线上各接写一句话。 例句：入团那天，春光融融，蓝蓝的天上飘着白云，校园里绽放着鲜花，
- 3在《春秋》这部书里，孔子教导人们，在人类社会的所有关系中，除了利害这种基本动机外，还有一种更为高尚的动机影响着人们的行为
- 4在“探究共点力合成的规律”的实验中，实验中必须要注意（ ）A．每次把橡皮条尽可能拉长B．每次将橡皮条拉到同样的位置C．
- 5等分子数的Na2CO3•mH2O和BaCl2•nH2O的混合物3.68g，加入足量水搅拌，经充分反应后可得1.97g沉淀
- 6在美国出生长大、即将成为第一位担任美国驻华大使的华裔美国人骆家辉，回到故乡广东台山的时候，依然按照台山的习俗拜祭祖先。他
- 7— ___ everyone here? — No, Jack isn"t here. [ ]A. Is B
- 8下图是国民革命时期创办的一所军校，其办学目的是为了[ ]A.建立抗日民族统一战线，抗击日本侵略者B.建立革命根据
- 9[物理一一选修3-4]（15分）
- 10二战后，西亚经济发展的最大特点是( )A．石油工业发展迅速B．炼油工业发展迅速C．石化工业发展迅速D．工业体系完整