单选题Generous public funding of basic science would ______ considerable benefits for the country's health, wealth and security.

单选题Henry Morris, an English professor, asks his college English classes to count "loan words". These are words we use that were taken directly from other languages. He jokes about the term "loan words". "It is not like we're going to give these words back after we've done with them," he says. "Imported words" might be a better term. Simple sentences may contain 15 percent or less of these. Complex. sentences may be 50 percent or more "imports". Scientific papers might use mostly loan words. "We use imports constantly,: Morris says, "generally without any idea we are using them." Was there ever a time when people spoke just plain English7 No. Scholars estimate that one-third of the world's languages are of Indo-European origin. These includes English, French, Latin, German, Dutch, Celtic, and Salvic tongues. Back around AD 450, when Julius Caesar was alive, English, as we know, it didn't exist. English is relatively young. Its roots go back 1,500 years, to Britain. People there spoke Celtic. Then came Anglo-Saxon invaders. These conquerors spoke a language closely related to older forms of Dutch. Morris says Dutch words like "word", "gras" and "man", became the English equivalents "word", "grass" and "man". Anglo-Saxon "Anglish" became "English". But our story does not end there. English continued to grow and change. When Norman French invaded Britain in 1066, the English vocabulary got an enormous boost. Scholars say that nearly half of all English words are French in their origin. Words like art, orange, taxi, train and surprise are a few examples. When English colonists came to America in the 1700s, they encountered native Americans and their languages. Words like wigwam, teepee, chipmunk, possum and tomahawk settled into the colonists' vocabulary. Centuries later, in the early 1900s, immigrants streamed to America's shores. Italians taught us to say broccoli, macaroni, opera and studio. Spanish speakers added mosquito, mustang, tortilla and alligator. Bagel, kosher and pastrami came from those who spoke Yiddish. And yam, gorilla and jitterbug were taken from African languages. So if you speak English, you use words from at least 35 foreign languages.

单选题Which of the following is true of the idea of degassing the lake?

单选题Passage Three Questions 33 to 35 are based on the passage you have just heard.

单选题Passage TwoQuestions 29 to 31 are based on the passage you have just heard.

单选题Passage Two Questions 29 to 31 are based on the passage you have just heard.

单选题Questions 19 to 22 are based on the conversation you have just heard.

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单选题The firemen acted ______ and prevented the fire from spreading.

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单选题{{B}}Passage Two{{/B}} New ice core samples taken from the centre of the Greenland ice-sheet have given a detailed record of the last "interglacial(间冰期)" which ran from about 135,000 to 115,000 years ago. The cores, taken from a depth of 2,780 to 2,870 metres, show that during this period the climate oscillated(摆动) between three states instead of remaining in one, as in the whole of recorded human history. The middle state was like our own, but the others were either much colder or warmer. Worse, it seems that the climate flipped from one Condition to another very rapidly. "It apparently took very little time, perhaps less than a decade or two, to shift between the states," Dr. J. C. W. White of the Institute of Arctic and Alpine Research at the University of Colorado wrote earlier this year in the scientific journal, Nature: "We humans have built a remarkable socio-economic system during perhaps the only time when it could be built, when the climate was stable enough to let us develop the agricultural infrastructure(基础设) required to maintain an advanced society. " We do not know why we have been so blessed. But if the Earth had an operating manual, the chapter on climate might begin with a warning that the system has been adjusted at the factory for optimum comfort-so don't touch the dials. Unfortunately, we have been "twiddling the knobs(旋钮)" for decades. In December 1995 the official Intergovernmental Panel on Climatic Change (IPCC., which represents the work of 2,000 top meteorologists from around the world, concluded that global warming due to human activities is probably already taking place. Global warming sounds deceptively favorable to inhabitants of countries which currently experience harsh winters. In fact, with global warming, the world would struggle to cope with the effects of even a steady, gradual warming. This was spelt out to members of the British Royal Society by Sir John Houghton, chairman both of Britain's Royal Commission of Environmental Pollution and of one of the main IPCC working groups. Houghton put forward the IPCC picture of seas flooding much of Egypt, Southern China and Bangladesh, making "many millions" of people homeless ; of hordes of "environmental refugees" and of wars breaking out over dwindling ( becoming gradually smaller) fresh water supplies, as world rainfall patterns changed. There is at least a chance that the world could adapt to steady warming if it happened slowly enough. However, many scientists, believe that even this prediction from the IPCC is too cautious.

单选题If we are to help students develop reading skills in a foreign language, it is important to understand what is involved in the reading process itself. If we have a clear idea of how "good readers" read, either in their own or a foreign language, this will enable us to decide whether particular reading techniques are likely to help learners or not. In considering the reading process, it is important to distinguish between two quite separate activities: reading for meaning (or "silent reading") and reading aloud. Reading for meaning is the activity we normally eng0ge in when we read books, newspapers, road signs, etc.; it is what you are doing as you read this text. It involves looking at sentences and understanding the message they convey, in other words "making sense" of a written text. It doesn't normally involve saying the words we read, not even silently inside our heads; there are important reasons for this, which are outlined below. Reading aloud is a completely different activity; its purpose is not just to understand a text but to convey the information to someone else. It is not an activity we engage in very often outside the class-room; common examples are reading out parts of a newspaper article to a friend, or reading a notice to other people who can't see it. Obviously, reading aloud involves looking at a text, understanding it and also saying it. Because our attention is divided between reading and speaking, it is a much more difficult activity than reading silently; we often stumble and make mistakes when reading aloud in our own language, and reading aloud in a foreign language is even more difficult. When we read for meaning, we do not need to read every letter or every word, nor even every word in each sentence. This is because, provided the text makes sense, we can guess much of what it says as we read it.

单选题According to the passage, why is bottled water so popular?

单选题Most of the streets of the new city were ______ systematically, making it easy for people to find their way.

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单选题Advanced technology has already pushed human being to edges, such as the production of weapons of mass destruction, the destruction of Ozone by Freon, and the application of clone. The heated debate over (67) cloning technique should be used in human reproduction must be considered as a serious (68) . Clone, to a certain degree, is (69) to mankind. Such disease as Parkinsons will (70) be cured in the future in the hope of further (71) of clone. However, the (72) of this technology will bring human being unthinkable destruction. (73) the declaration of the death of Dolly, we are more (74) of the inefficient procedure of clone. According to "Dolly's false legacy", the incidence of death among offspring (75) by cloning is much higher than it is (76) natural reproduction--roughly 10 times as high as (77) before birth and 3 times as high after birth. And (78) you may argue that this technology will be perfected in the future, I don't see there is any point in (79) --being cloning. Many people (80) this technology a promising one as to bring all human being to a new era in which all human (81) will be accomplished by cloning. (82) scientists in some countries have already started their great plan to clone human. But let's think, what is the practical value in doing so? You may tell me that it can bring hope for those couples (83) to have children because they might choose to have a copy of one of them rather than (84) the gene intrusion from a (85) But imagine, if you have a child owning the same appearance as yours or your husband's, will you accept it without any (86) .

单选题Questions 19 to 22 are based on the conversation you have just heard.