Scientists are developing an intelligent robot that can “see” and “touch” and make decisions like human beings.

A . Right B . Wrong C . Not mention

A.in conjunction with B.apart from C.as such D.on the threshold

Sharks do not have bones, and a shark has an extremely good sense of smell. It can find. small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. Sharks also sense electrical and magnetic power linked to nerves and muscles of living animals. These powerful senses help them find their fond. Some sharks will eat just about anything. Many unusual things have been found in the stomachs of some large sharks. They include shoes, dogs, a cow's foot and metal protective clothing. About forty percent of the different kinds of sharks lay eggs. The others give birth to live young. Some sharks carry their young inside their bodies like humans do. Scientists are beginning to understand the importance of sharks to humans. Medical researchers want to learn more about the shark's body defense system against disease. They know that sharks recover quickly from injuries. Sharks appear never to suffer infections, cancer or heart diseases. What is this passage mainly about？ A．The necessity of protecting sharks. B．The living environment of sharks. C．The dangers of sharks to human beings. D．An introduction to sharks.

A．Worsening environment. B．Disease and chemicals. C．Dwindling number of flowers around. D．Changes in genes' structures.

A.a oxygen-free environment B.an environment with the same concentration of oxygen as the Earth has C.a carbon dioxide-free environment D.an environment filled with the greenhouse gas

A．A.extract B．B.inject C．C.discharge D．D.drain

此题为多项选择题。

A)另一些科学家说能源的问题显得很糟 , 节约能源为时已晚。 B)另一些科学家的观点是能源的状况很糟 , 节约能源迫在眉睫。 C)另一些科学家坚信环境问题会更严重 , 并且很快人们的环境将无法挽救。 D)另一些科学家相信环境变得更糟糕了 , 并且已经来不及挽救了。 E)另一些科学家认为环境问题会更严重 , 并且很快这种糟糕的环境将无法挽救。

Researchers have learned that the slapping noise pigeons make when they suddenly take off is the sound of super charged lift. They call it the "clap fling" effect. Here at SRI International scientists try to duplicate the pigeons' thrust. A flashing strobe reveals the secret. Scott Stanford, a scientist at SRI, says, You re looking at the clap fling effect, where the two wings will come together and peel apart 【C2】______ each other, thus augmenting lift 【C3】______ drawing air from the top to the bottom. " This mechanical bug won't get off the ground. 【C4】______ its flapping wings demonstrate a potential propulsion system for robotic birds: man-made rubbery muscle. Roy Kornbluh works at SRI. "There, I'm turning the voltage on and off, and you can see when the voltage is on, the material is larger 【C5】______ when the voltage is off." Super computers show high-speed airflows over supersonic aircraft. But scientists have only begun to see how air flows 【C6】______ really low speeds. Professor Max Platzer of the Naval Postgraduate School, says, "The flapping wing is generating a thrust, this way, this is the basic physics of the phenomenon." It's pelicans--not pigeons--the Navy is looking at. The Navy is looking at the smooth easy flight of pelicans low over water--called "ground effect." Researchers at the Naval Postgraduate School are trying to imitate the pelican's efficiency. Assistant Professor Kevin Jones of the Naval Postgraduate School says, " 【C7】______ flapping the wings, symmetrically, we're 【C8】______ effect imitating ground effect. We now have the same feature a bird sees when it's flying, over a ground plane." An electric motor drives the flapping wings. Researchers here are working 【C9】______ ways to beam power to the tiny bird. David Jenn of the Naval Postgraduate School says, "There's no battery inside of here, so we're going to set this inside the radar beam, and the energy is extracted from the radar beam and will be used to propel the motor." Scientists are learning it's one thing to build an airplane, 【C10】______ quite another to build a bird. 【C1】______

The radiation comes as a result of the 500 atomic bomb tests carried out in the atmosphere by the nuclear nations in the 1950s and 1960s. Long-lived isotopes in the fall-out have built up in Arctic lichens which are the reindeer's staple diet. The reindeer have been found to concentrate the isotopes in their bodies. Animals are affected all over the Arctic, with the most radioactive reindeer in Canada, Alaska and Siberia's Taimyr Peninsula. Enormous amounts of reindeer meat — some 14,000 tonnes — are eaten in the Arctic each year. Research at the Danish Riso National Laboratory has found that reindeer herders, who consume a lot of the meat, take in 300 times more radiation each year than is the average anywhere in northern Europe. Norway's Radiation Protection Authority estimates that many hundreds of herders have died of cancer as a result. Meanwhile reindeer are emerging as one of the greatest environmental threats to the Norwegian Arctic. Over-grazing and trampling is causing more damage to the fragile tundra than pollutants from the world's worst-offending factories. Over the last 40 years the number of reindeer in the Norwegian Arctic have doubled, reaching 20 animals per square kilometre, a very high density. Research by the Norwegian and Danish geological surveys and Russia's Kola Science Centre have found that 75 percent of the moss in the Norwegian Arctic and 85 percent of lichen have been "severely damaged" by reindeer. Three-quarters of the area is suffering from soil erosion. By contrast, two of the world's most polluting factories---nickel smelters in Russia's Kola peninsula — have about 10 percent of the moss and 14 percent of the lichen in the area. Even the Saami people, who own most of the reindeer, admit that the animals may be causing problems. Lars-Ander Baer, vice-president of their council, admitted to a conference on the Arctic environment recently: "We simply don't know how many reindeer the northern part of Norway can take." Which of the following is NOT a cause of the problem under discussion？ A．Over-grazing. B．Radioactive contamination. C．Poaching. D．Trampling.

A、If B、All that C、What D、If what

say they will have made it by the year 2020.Carol Packer repots. Machines that walk，speak and feel are no longer science fiction.Kismet is the name of an android(机器人)which scientists have built at the Massachusetts Institute of Technology(MIT).Kismet is different from the tradition。al robot because it can show human emotions.Its eyes.ears and lips move to show when it feels happy.sad or bored.Kismet is one of the first of a new generation of androids—robots that 100k like human beings—which can imitate human feelings.Cog，another android invented by the MIT, imitates the action of a mother However,scientists admit that so far Cog has the mental ability of a two year old. The optimists(乐观主义者)say that by the year 2020 we will have created humanoids(机器人)with brains similar to those of an adult human being.These robots will be designed to look like people to make them more attractive and easier to sell to the public.What kind of jobs will they do？ In the future，robots like Robonaut ，a humanoid invented by NASA，will be doing dangerous jobs，like repairing space stations They will also be doing more and more of the household work for US.In Japan，scientists are designing androids that will entertain US by dancing and playing the piano. Some people worry about what the future holds：will robots become monsters(怪物)？Will people themselves become increasingly like robots？ Experts predict that more and more people will be wearing micro-computers，connected to the Internet，in the future.People will have micro-chips in various parts of their body，which will connect them to a wide variety of gadgets(小装置).Perhaps we should not exaggerate(夸大)the importance of technology，but one wonders whether , in years to come，we will still be falling in love，and whether we will still feel pain.Who knows？ 第11题：Kismet is different from traditional robots because A．it thinks for itself B．it is not 1ike science fiction C．it Can 100k after two-year—olds D．it seems to have human feelings

By this time, the World War II had ended in Europe. But the Japanese refused to surrender, the Americans decided that by dropping an atomic bomb on Japan, they could end the war quickly and save more of their soldier’s lives. Soon after midnight on 6 August 1945, a bomb was dropped on the city of Hiroshima, a civilian target. No warning was given and there was total devastation. Almost all the buildings were destroyed and more than 100000 people died or were horribly wounded. The Japanese military still did not want to surrender so three days later, the Americans dropped a second atomic bomb on the city of Nagasaki, killing 45000 people. The Japanese government was discussing ending the war when they heard the news of Nagasaki. Finally, they surrendered and the World War II came to an end. At first, the scientists who had built the bomb were pleased that it had helped to end the war. However, many would come to realize that they had helped to create the most terrible weapon known to man. The first atomic bomb ______. A．was less powerful B．was dropped in Nagasaki C．was a failure D．was tested in desert

对 错

对 错

A．Keep the public informed and especially to advise politicians and other influential persons. B．The scientists should make the technological assessment of foreseeable benefits and harmful effects. C．One thing scientists can and should do is to counteract the tendency of the news media to exaggererate and sensationalize new developments. D．A scientist should be responsible for presenting a？ true picture to the public about new developments in his own field,and for indicating possible implications so far as he can see them. 此题为多项选择题。

A．involving B．involves C．involved D．involve