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We can separate the mixture into the pure chemical compounds______it is composed.
A．in which
B．of that
C．of which
D．from which
答案
更多“We can separate the mixture into the pure chemical compounds______it is composed.A．in whic”相关的问题
第1题
Our skins let us know whether the air is moist or dry, whether surfaces are wet without being sticky or slippery. From the uniformity of slight pressure, we can be aware how deeply a finger is thrust into water at body temperature, even if the Anger is enclosed in a rubber glove that keeps the skin completely dry. Many other animals, with highly sensitive skins, appear to be able to learn still more about their environment. Often they do so without employing any of the five senses.
By observing the capabilities of other members of the animal kingdom, we come to realize that a human being has far more possibilities than are utilized. We neglect ever so many of our senses in concentrating on the five major ones. At the same time, a comparison between animals and man draws attention to the limitation of each sense. The part of the spectrum (光谱) seen by colour-conscious man as red is non-existent for honey-bees. But a bee can see far more in flowers than we, because the ultra-violet (紫外线) to which our eyes are blind is a stimulating (刺激的) part of the insect's spectrum, and, for honey-bees at least, constitutes a separate colour.
From the passage we realize that ______.
A．man possesses far more senses than the five major ones
B．man possesses a few more senses than animals
C．man possesses as many senses as animals
D．man has fully utilized his senses
第2题
Research experience is an essential element of hearing and promotion at a research university because it is the emphasis on research that distinguishes such a university from an arts college. Some professors, however, neglect teaching for research and that presents a problem.
Most research universities reward outstanding teaching, but the greatest recognition is usually given to achievements in research. Part of the reason is the difficulty of judging teaching. A highly responsible and tough professor is usually appreciated by top students who want to be challenged but disliked by those whose records are less impressive. The mild professor usually gets high overall ratings, but there is a sense of disappointment on the part of the best students. Thus, a university trying to promote professors primarily on the basis of teaching qualities would have to confront this confusion.
As modern science moves faster, two forces are exerted on professors: one is the time needed to keep up with the profession; the other is the time needed to teach. The training of new scientists requires outstanding teaching at the research university as well as the arts college. Although scientists are usually made in the elementary schools, scientists can be lost by poor teaching at the college and graduate school levels. The solution is not to separate teaching and research but to recognize that the combination is difficult but vital. It is time for universities to reserve the title of professor for those willing to profess, willing to be an earnest part of the community of scholars. Professors unwilling to teach can be called "distinguished research investigators." or something else.
The pace of modern science makes it increasingly difficult to be a great researcher and a great teacher. Yet many are described in just those terms. Those who say we can separate teaching and research simply do not understand the system, but those who say the problem will disappear are not fulfilling their responsibilities.
What point does the author intend to put across in the first paragraph？
A．Teaching and research are two contradictory fields.
B．Research can never be overemphasized.
C．The relationship between research and teaching should not be simplified.
D．It is not right to overestimate the importance of teaching.
第4题
第5题
A.countless
B.entire
C.separate
D.unique
第6题
People who can’t _________between colors are said to be color blind．
A． separate
B． split
C． distinguish
D． divide
第7题
2 Shop-lifters can be divided into three main categories: the professionals, the deliberate amateurs, and the people who just can't help themselves. The professionals do not pose much of a problem for the store detectives, who, assisted by closed circuit television, two way mirrors and various other technological devices, can usually cope with them. The professionals tend to go for high value goods in parts of the shops where security measures are tightest. And, in any case, they account for only a small percentage of the total losses due to shop-lifting.
3 The same applies to the deliberate amateur who is, so to speak, a professional in training. Most of them get caught sooner or later, and they are dealt with severely by the courts.
4 The real problem is the person who gives way to a sudden temptation and is in all other respects an honest and law-abiding citizen. Contrary to what one would expect, this kind of
shop-lifter is rarely poor. He does not steal because he needs the goods and cannot afford to pay for them. He steals because he simply cannot stop himself. And there are countless others who, because of age, sickness or plain absent-mindedness, simply forget to pay for what they take from the shops. When caught, all are liable to prosecution, and the decision whether to send for the police or not is in the hands of the store manager.
5 In order to prevent the quite incredible growth in shop-lifting offences, some stores, in fact, are doing their best to separate the thieves from the confused by prohibiting customers from taking bags into the store. However, what is most worrying about the whole problem is, perhaps, that it is yet another instance of the innocent majority being penalized and inconvenienced because of the actions of a small minority. It is the aircraft hijack situation in another form. Because of the possibility of one passenger in a million boarding an aircraft with a weapon, the other 999,999 passengers must subject themselves to searches and delays. Unless the situation in the shops improves, in ten years' time we may all have to subject ourselves to a body-search every time we go into a store to buy a tin of beans!
Why does the honest public have to pay higher prices when they go to the shops？
A．There is a "shrinkage" in market values.
B．Many goods are not available.
C．Goods in many shops lack variety.
D．There are many cases of shop-lifting.
第8题
Notions of women's liberation have never taken root among Japanese women. But with scant open conflict, the push for separate burials is quietly becoming one of the country's fastest growing social trends. In a recent survey by the TBS television network, 20 percent of the women who responded said they hoped to be buried separately from their husbands.
The funerary revolt comes as women here annoy at Japan's slow pace in providing greater equality between the sexes. The law, for example, still makes it almost impossible for a woman to use her maiden name after marriage. Divorce rates are low by Western standards, meanwhile, because achieving financial independence, or even obtaining a credit card in one's own name, are insurmountable hurdles for many divorced women. Until recently, society enforced restrictions on women even in death. Under Japan's complex burial customs, divorced or unmarried women were traditionally unwelcome in most graveyards, where plots are still passed down through the husband's family and descendants must provide maintenance for burial sites or lose them.
"The woman who wanted to be buried alone couldn't find a graveyard until about 10 years ago," said Haruyo Inoue, a sociologist of death and burial at Japan University. She said that graveyards that did not require descendants, in order to accommodate women, began appearing around 1990. Today, she said, that there are close to 400 of these cemeteries in Japan. That is just one sign of stirring among Japanese women, who are also pressing for the first time to change the law to be able to use their maiden names after marriage.
Although credit goes beyond any individual, many women cite Junko Mastubara, a popular writer on women's issues, with igniting the trend to separate sex burials. Starting three years ago, Ms. Matsubara has built an association of nearly 600 women--some divorced, some unhappily married, and some determinedly single who plan to share a common plot curbed out of an ordinary cemetery in the western suburb of Chofu.
From the fact that divorce can mean a life of hardship for Japanese women, we can infer that ______.
A．many Japanese women have a bad relationship with their husbands
B．many Japanese women live together with their husband in perfect harmony
C．many Japanese women have a low social status
D．it's an out-dated custom for Japanese women to be housewives
第9题
2 Shop-lifters can be divided into three main categories: the professionals, the deliberate amateurs, and the people who just can't help themselves. The professionals do not pose much of a problem for the store detectives, who, assisted by closed circuit television, two way mirrors and various other technological devices, can usually cope with them. The professionals tend to go for high value goods in parts of the shops where security measures are tightest. And, in any case, they account for only a small percentage of the total losses due to shop-lifting.
3 The same applies to the deliberate amateur who is, so to speak, a professional in training. Most of them get caught sooner or later, and they are dealt with severely by the courts.
4 The real problem is the person who gives way to a sudden temptation and is in all other respects an honest and law-abiding citizen. Contrary to what one would expect, this kind of
shop-lifter is rarely poor. He does not steal because he needs the goods and cannot afford to pay for them. He steals because he simply cannot stop himself. And there are countless others who, because of age, sickness or plain absent-mindedness, simply forget to pay for what they take from the shops. When caught, all are liable to prosecution, and the decision whether to send for the police or not is in the hands of the store manager.
5 In order to prevent the quite incredible growth in shop-lifting offences, some stores, in fact, are doing their best to separate the thieves from the confused by prohibiting customers from taking bags into the store. However, what is most worrying about the whole problem is, perhaps, that it is yet another instance of the innocent majority being penalized and inconvenienced because of the actions of a small minority. It is the aircraft hijack situation in another form. Because of the possibility of one passenger in a million boarding an aircraft with a weapon, the other 999,999 passengers must subject themselves to searches and delays. Unless the situation in the shops improves, in ten years' time we may all have to subject ourselves to a body-search every time we go into a store to buy a tin of beans!
Why does the honest public have to pay higher prices when they go to the shops？
A．There is a "shrinkage" in market values.
B．Many goods are not available.
C．Goods in many shops lack variety.
D．There are many cases of shop-lifting.
第10题
It can be inferred from the passage that （）.
A.teenagers under 14 are not allowed to visit the White House
B.foreigners are less likely to be permitted to tour the White House
C.separate tours can also be scheduld for individual visitors
D.security is the chief concern in scheduling White House tours
