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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
People who can’t _________between colors are said to be color blind．
A． separate
B． split
C． distinguish
D． divide
第3题
Aluminum is lightweight, rustproof and easily shaped into different forms. By mixing it with other metals, scientist have been able to produce a variety of alloys, some of which have the strength of steel but weigh only one third as much.
Today, the uses of aluminum are innumerable. Perhaps its most important use is in transportation. Aluminum is found in the engines of automobiles, in the hulls of boats. It is also used in many parts of airplanes. In fact, the huge "airbus" planes would probably never have been produced if aluminum did not exist. By making vehicles lighter in weight aluminum has greatly reduced the amount of fuel needed to move them. Aluminum is also being used extensively in the building industry in some countries.
Since aluminum is such a versatile(多用的) metal, it is fortunate that bauxite(铝土矿) , which is one of its chief sources, is also one of the earth's most plentiful substances. As the source of aluminum is almost inexhaustible, we can expect that more and more uses will be found for this versatile metal.
The price of aluminum was sharply reduced when people discovered a new refining process with the aid of______.
A．wind power
B．solar energy
C．hydraulic power
D．electricity
第4题
News stories give facts, not the author's opinions. Editorials do the opposite, you can expect an editorial to take sides. Some newspaper editorials have a by-line with the author's name, but many newspapers have unsigned editorials. These reflect the opinions of the publisher or editor.
You can be a better reader if you know what to expect in a newspaper. For example, you can expect headlines to omit unnecessary words. You can expect to find the most important facts in the lead paragraph(the first paragraph) of a news story. You can expect important news items to be on the front page. You can expect less important items to be on the inside pages.
Most of all, the more you know about the current news, the more you will understand what is in the newspaper; important stories are generally presented one day and followed up on following days. So, an important way for reading newspapers is reading one frequently.
A good way to read a large newspaper is______.
A．to do some paper-cutting
B．to read it from cover to cover
C．to find separate sections
D．to predict what is inside the newspaper
第5题
Both Candice and Louis have made commitments to each other. They think of themselves as couple. However, each has the freedom to develop new friends, to seek separate social activities, to build separate careers, and to have his or her individual needs fulfilled.
Living together can be the transition from extended dating to marriage. Just recently, Louis and Candice decided to live together. They are not sure about marriage and want to try living together first. Louis has many divorced friends who had rushed into marriage. He doesn't want to make a similar mistake. He knows that living together will not be easy, but feels he has few alternatives. Friends and family will exert pressure on the couple to get married. Louis knows that this is the worst reason to get married. He believes that living together will provide Candice and him with an opportunity to see how well each can adjust to the other's feelings and living styles.He hopes they will discover whether they are compatible.
Louis moved into Candice's apartment this weekend. Books, records, and clothing fit in nicely. Of course, they will have to decide what to do with two couches, two beds, twenty-two pots and pans, and duplicates of all kitchen and bath items. They have settled in as an unmarried-married couple and will have to make the same adjustments as any newlyweds.
The special relationship between Candice and Louis prevents them from ______.
A．having new friends
B．developing individual careers
C．having their social activities together all the time
D．realizing separate needs
第6题
(1) The entity concept requires that a business is treated as being separate from its owners.
(2) The use of historical cost accounting tends to understate assets and profit when prices are rising.
(3) The prudence concept means that the lowest possible values should be applied to income and assets and the
highest possible values to expenses and liabilities.
(4) The money measurement concept means that only assets capable of being reliably measured in monetary terms
can be included in the balance sheet of a business.
A 1 and 2
B 2 and 3
C 3 and 4
D 1 and 4
第7题
Jane：OK. And we can ask them to prepare some drinks.
Michael： ？
第8题
As we can no longer wait for the delivery of our order, we have to______ it.
A．postpone
B．refuse
C．delay
D．cancel
第9题
We don't need heating system, ______.
A．and nor we can afford it
B．we don't afford it
C．nor can we afford it
D．nor can it afford
