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Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank. The use of nuclear power has already spread all over the world. 1 , scientists still have not agreed 2 what should be done with the large amounts of waste materials that 3 to increase every year. Most waste materials are 4 of simply by placing them somewhere. But nuclear waste must be 5 with great care. It 6 dangerous radiation and it will continue to be 7 for hundreds of, thousands, even millions of years. How should we get 8 of such waste material in such a way 9 it will not harm the 10 Where can we 11 distribute it One idea is to put this radioactive waste inside a thick container, which is 12 dropped to the deep bottom of the ocean. 13 some scientists believe that this way of 14 nuclear waste could kill fish and other living things in the oceans or interfere 15 their growth. Another way to 16 nuclear waste is to send it into space, to the sun, 17 it would be burned. Other scientists suggest that this polluting material be 18 thousands of meters under the earth’s surface. Such underground areas must be free 19 possible earthquake. Advances are being made. But it may still be many years 20 this problem could be finally settled.
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Read the following text. Answer the questions below the text by choosing A, B, C, or D. Since the dawn of human ingenuity, people have devised ever more cunning tools to cope with work that is dangerous, boring, burdensome or just plain nasty. That compulsion has resulted in robotics—the science of conferring various human capabilities on machines. And if scientists have yet to create the mechanical version or science fiction, they began to come close. As a result, the modern world is increasingly populated by intelligent gizmos whose presence we barely notice but whose universal existence has removed much human labor. Our factories hum to the rhythm of robot assembly arms. Our banking is done at automated teller terminals that thank us with mechanical politeness for the transaction. Our subway trains are controlled by tireless robot-drivers. And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with submillimeter accuracy—far greater precision than highly skilled physicians can achieve with their hands only. But if robots are to reach the next stage of laborsaving utility, they will have to operate with less human supervision and be able to make at least a few decisions for themselves—goals that pose a real challenge. "While we know how to tell a robot to handle a specific error," says Dave Lavery, manager of a robotics program at NASA, "we can’t yet give a robot enough common sense to reliably interact with a dynamic world." Indeed the quest for true artificial intelligence has produced very mixed results. Despite a spell of initial optimism in the 1960s and 1970s when it appeared that transistor circuits and microprocessors might be able to copy the action of the human brain by the year of 2010, researchers lately have begun to extend that forecast by decades if not centuries. What they found, in attempting to model thought, is that the human brain’s roughly one hundred billion nerve cells are much more talented—and human perception far more complicated—than previously imagined. They have built robots that can recognize the error of a machine panel by a fraction of a millimeter in a controlled factory environment. But the human mind can glimpse a rapidly changing scene and immediately disregard the 98 percent that is irrelevant, instantaneously focusing on the monkey at the side of a winding forest road or the single suspicious face in a big crowd. The most advanced computer system on Earth can’t approach that kind of ability, and neuroscientists still don’t know how we do that. Besides reducing human labor, robots can also ______.
Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank. The use of nuclear power has already spread all over the world. 1 , scientists still have not agreed 2 what should be done with the large amounts of waste materials that 3 to increase every year. Most waste materials are 4 of simply by placing them somewhere. But nuclear waste must be 5 with great care. It 6 dangerous radiation and it will continue to be 7 for hundreds of, thousands, even millions of years. How should we get 8 of such waste material in such a way 9 it will not harm the 10 Where can we 11 distribute it One idea is to put this radioactive waste inside a thick container, which is 12 dropped to the deep bottom of the ocean. 13 some scientists believe that this way of 14 nuclear waste could kill fish and other living things in the oceans or interfere 15 their growth. Another way to 16 nuclear waste is to send it into space, to the sun, 17 it would be burned. Other scientists suggest that this polluting material be 18 thousands of meters under the earth’s surface. Such underground areas must be free 19 possible earthquake. Advances are being made. But it may still be many years 20 this problem could be finally settled.
In what way does the speaker think diving is similar to space travel
以下提供若干个案例，每个案例下设若干个考题，请根据各考题题干所提供的信息，在每题下面A、B、C、D、E五个备选答案中选择一个最佳答案。 患者女性，25岁。因面色苍白、头晕、乏力1年余，近1个月伴心慌就诊。结婚半年，月经初潮14岁，7天/27天，末次月经半月前，近2年月经量多，半年来更明显。贫血貌，皮肤黏膜无出血点，浅表淋巴结不大，巩膜不黄染，口唇苍白，舌乳头正常，心肺无异常，肝脾不大。化验：Hb 64g/L，RBC 3.0×1012/L，MCV 70fl，MCH 25pg，MCHC 30%，WBC 6.5×109/L，分类：中性分叶70%，淋巴27%，单核3%，PLT 260×109/L，网织红细胞1.5%，尿蛋白(-)，镜检(-)，大便潜血(-)，血清铁6.0μmol/L。 该患者的贫血程度为
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