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[单选题]

在Science Watch中，哪一个选项可以查看全球某个领域的研究进展（)。

A.Global Research Reports

B.Citation Laureates

C.SCI-Bytes

D.Home

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更多“在Science Watch中，哪一个选项可以查看全球某个领…”相关的问题

第1题

下面选项中，哪一个对于浮选时间对浮选的影响的叙述是不正确的（)。

A.浮选时间过长，会使精煤质量下降。

B.当矿物的可浮性不好，被浮砂物的含量高，矿浆浓度较大时，需较长的浮选时间

C.当矿物的可浮性好，被浮砂物的含量低，浮选的给矿粒度适当，矿浆浓度较小时，所需的选浮时间就较短

D.浮选时间对浮选的影响不是很明显

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第2题

Part ADirections: Read the following four texts. Answer the questions below each text by c

Part A

Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)

In a large, air-conditioned room in a conference center located in a city of more than a million people, well-qualified doctors of science discuss the pros and cons of global warming, and debate how the temperature of the sea is being measured. After several hours of discussion, they walk out into the warm sunshine of a summer's day, heading off to a comfortable restaurant for lunch.

On the same day, on the sands of small islands in the middle of the Pacific Ocean, baked hard by the burning sun, Hemi and Naqono look at the water lapping over the place where they once stored their potato plants. They watch the waves dashing gently at the feet of their straw huts which some years ago were many metres from the seashore.

Global warming is a problem for theoretical discussion among scientists all over the world. For many Pacific Islanders it is now becoming a practical problem. While international science argues about global warming and climate change, low-lying Pacific Islands are already suffering coastal erosion and crop failures.

In places such as Marshall Islands, where much of the land is only a metre above sea-level, villagers face leaving their slowly disappearing homes.

Scientists and officials from 13 Pacific Island Countries discussed their concerns in a Pacific conference in Aukland, New Zealand, and examined a New Zealand computer model on climate change that could provide a valuable planning tool. Lack of meteorological and tidal research means Government agencies throughout the Pacific and the world have to rely largely on anecdotal of rising sea levels eroding foreshores, and increasingly severe droughts affecting the vital coconut crop.

Australian research commissioned by the South Pacific Regional Environment Programme has already calculated that human greenhouse gas emissions already measured up to 1995 will cause a 5cm to 12cm sea-level rise by 2025. Pacific Island countries fear their vulnerable low-lying homes will be the first to pay the price for the emissions of industrialized nations.

A Pacific Islands Climate Change Assistance Programme is already in place and is working on plans to help Pacific Islanders who have few resources to combat the fast-changing environmental circumstances.

Yumi Crisostomo, of the Marshall Islands Environmental Protection Authority, said residents of some of the 1,225 islands in the group had reported alarming coastal erosion, forcing them to shift homes inland. Some islands were only about a kilometer across, so residents had little room to move. "We may have to look at the option of internal migration within the island group," he said.

The first two paragraphs suggest that

A．global warming is not only a theoretical problem but also a practical one.

B．there is a great difference between the rich and poor.

C．science discussion has nothing to do with the practical problem.

D．well-qualified doctors know little about the reality of the problem.

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第3题

Science, in practice, depends far less on the experiments it prepares than on the prepared

ness of the minds of the men who watch the experiments. Sir Isaac Newton supposedly discovered gravity through the fall of an apple. Apples had been falling in many places for centuries and thousands of people had seen them fall. But Newton for years had been curious a- bout the cause of the orbital motion of the moon and planets. What kept them in place？ Why didn’t they fall out of the sky？ The fact that the apple fell down toward the earth and not up into the tree answered the question he had been asking himself about those larger fruits of the heavens, the moon and the planets.

How many men would have considered the possibility of an apple failing up into the tree？ Newton did because he was not trying to predict anything. He was just wondering. His mind was ready for the unpredictable. Unpredictability is part of the essential nature of research. If you don’t have unpredictable things, you don’t have research. Scientists tend to forget this when writing their cut and dried reports for the technical journals, but history is filled with examples of it.

In talking to some scientists, particularly younger ones, you might gather the impression that they find the "scientific method" a substitute for imaginative thought. I've attended research conferences where a scientist has been asked what he thinks about the advisability of continuing a certain experiment. The scientist has frowned, looked at the graphs, and said "The data are still inconclusive." "We know that," the men from the budget office have said, "but what do you think？" Is it worthwhile going on？ What do you think we might expect？" The scientist has been shocked at having even been asked to speculate.

What this amounts to, of course, is that the scientist has become the victim of his own writings. He has put forward unquestioned claims so consistently that he not only believes them himself, but has convinced industrial and business management that they are true. If experiments are planned and carried out according to plan is faithfully as the reports in the science journals medicate, then it is perfectly topical for management to expect research to produce results measurable ill dollars and cents. It is entirely reasonable for auditors to believe that scientists who know exactly where they arc going and how they will get there should not be distracted by the necessity of keeping one eye on the cash register while the other eye is on the microscope. Nor, if regularity and conformity to a standard pattern are as desirable to the scientist as the writing of his papers would appear to reflect, is management to be blamed for discriminating against the "odd balls" among re- searchers in favor of more conventional thinkers who "work well with the team".

The autor wants to prove with the example of Isaac Newton that ______.

A．inquiring minds are more important than scientific experiments

B．science advances when fruitful researches are conducted

C．scientists seldom forget the essential nature of research

D．unpredictability weighs less than prediction in scientific research

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第4题

在LCD中，以下哪一个部件中的内容是DDRAM的单元地址？（) （A) BF （B) AC （C) RS （D) DL

在LCD中，以下哪一个部件中的内容是DDRAM的单元地址？( )

(A) BF (B) AC (C) RS (D) DL

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第5题