试题与答案

氧化铝色谱适用于分离的成分是A.氨基酸 B.亲水性成分 C.大分子化合物 D.酚性成

题型:单项选择题

题目:

氧化铝色谱适用于分离的成分是

A.氨基酸

B.亲水性成分

C.大分子化合物

D.酚性成分

E.碱性成分

答案:

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参考答案:C解析:[考核要点] 第七章第五节,主要考核现金流量分析内容。[解题思路] 掌握项目投资现金流量分析,是融资前分析,它不受融资方案的影响。融资前项目投资现金流量分析,是从项目投资总获利能力角度...

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Home Alone

It was Sunday afternoon. My brother and I were alone at home. My parents went for a party and asked me to look after my brother.  I was doing my homework while my younger brother was watching TV. Suddenly the doorbell rang. Ding-Dong!  My brother thought that it was our parents, so he opened the      1  quickly.

A tall man wearing a black raincoat stood outside. He said that he came to sell books and asked politely     2  our parents were at home.

Without thinking, my brother said, "No." Then the man asked if we would like tosome story books. I refused him. When I wanted to close the door, he suddenly pushed the door very      4   and came into our house.  He took out a     5    and ordered me to tie up my brother’s hands with a rope.  I tied up his hands in a special way so my brother could untie

     6    easily. The man then tied my hands up and locked     7    of us in the kitchen. Soon, he went upstairs to     8  money. I taught my brother to untie the rope on his    9 .He then untied me. I rushed to the telephone to call the police,     10     the line was dead. The doors were all locked from the outside. It was lucky that the man      11   to lock the kitchen window. We got out of the house through the kitchen window and went to the   12 pay phone to call the police.

Soon   13  came to our house and the man was caught. By that time, my parents had come home. We told them the whole story. My parents were   14 that we were not hurt. They told me that I should stop my brother from   15 the door to strangers. I learnt a lesson on safety.

(    ) 1. A. window         B. door         C. book        D. fridge

(    ) 2. A. if               B. why         C. when        D. how

(    ) 3. A. lend         B. borrow      C. sell            D. buy

(    ) 4. A. politely           B. slowly      C. hard        D. quietly

(    ) 5. A. book             B. knife       C. gift        D. pen

(    ) 6. A. himself      B. myself          C. herself         D. themselves

(    ) 7. A. none          B. neither         C. both        D. all

(    ) 8. A. look at            B. look after  C. look like       D. look for

(    ) 9. A. feet              B. hands       C. neck        D. legs

(    ) 10. A. and         B. so             C. or          D. but

(    ) 11. A. wanted          B. remembered   C. forgot          D. tried

(    ) 12. A. farthest        B. nearest         C. largest         D. smallest

(    ) 13. A. my friends        B. the police       C. the neighbors    D. my parents

(    ) 14. A. glad            B. angry       C. sad         D. sorry

(    ) 15. A. cleaning        B. closing     C. locking         D. opening

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题型:单项选择题

Wherever people have been, they have left waste behind, which can cause all sorts of problems. Waste often stinks, attracts vermin and creates eyesores. More seriously, it can release harmful chemicals into the soil and water when dumped, or into the air when burned. And then there are some really nasty forms of industrial waste, such as spent nuclear fuel, for which no universally accepted disposal methods’ have thus far been developed.

Yet many also see waste as an opportunity. Getting rid of it all has become a huge global business. Rich countries spend some $120 billion a year disposing of their municipal waste alone and another $150 billion on industrial waste. The amount of waste that countries produce tends to grow in tandem with their economies, and especially with the rate of urbanization. So waste firms see a rich future in places such as China, India and Brazil, which at present spend only about $5 billion a year collecting and treating their municipal waste.

Waste also presents an opportunity in a grander sense: as a potential resource. Much of it is already burned to generate energy. Clever new technologies to turn it into fertiliser or chemicals or fuel are being developed all the time. Visionaries see a world without waste, with rubbish being routinely recycled.

Until last summer such views were spreading quickly. But since then plummeting prices for virgin paper, plastic and fuels, and hence also for the waste that substitutes for them, have put an end to such visions. Many of the recycling firms that had argued rubbish was on the way out now say that unless they are given financial help, they themselves will disappear.

Subsidies are a bad idea. Governments have a role to play in the business of waste management, but it is a regulatory and supervisory one. They should oblige people who create waste to clean up after themselves and ideally ensure that the price of any product reflects the cost of disposing of it safely. That would help to signal which items are hardest to get rid of, giving consumers an incentive to buy goods that create less waste in the first place.

That may sound simple enough, but governments seldom get the rules right. In poorer countries they often have no rules at all, or if they have them they fail to enforce them. In rich countries they are often inconsistent: too strict about some sorts of waste and worryingly lax about others. They are also prone to imposing arbitrary targets and taxes. California, for example, wants to recycle all its trash not because it necessarily makes environmental or economic sense but because the goal of “zero waste” sounds politically attractive.

Waste firms expect a great development in China, India and Brazil because()

A. those economies have a large amount of waste to be treated

B. those economies develop fast but spend little on waste business

C. those economies welcome waste firms to run business there

D. those economies pay more attention to environmental protection

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题型:单项选择题

Cultural responses to modernization often manifest themselves in the mass media. For example, Aldous Huxley, in Brave New World, created a fictional world in which he cautioned readers that modern science and technology posed a threat to individual dignity. Charlie Chaplin’s film Modern Times, set in a futuristic manufacturing plant, also told the story of the dehumanizing impact of modernization and machinery. Writers and artists, in their criticisms of the modern world, often point to technology’s ability to alienate people from one another, capitalism’s tendency to foster greed, and government’s inclination to create bureaucracies that oppress rather than help people.

Among the major values of the modern period, four typically manifest themselves in the cultural environment: celebrating the individual, believing in rational order, working efficiently, and rejecting tradition. These values of the modern period were originally embodied in the printing press and later in newspapers and magazines. The print media encouraged the vision of individual writers, publishers, and readers who circulated new ideas. Whereas the premodern period was guided by p beliefs in a natural or divine order, becoming modern meant elevating individual self-expression to a central position. Along with democratic breakthroughs, however, individualism and the Industrial Revolution triggered modern forms of hierarchy, in which certain individuals and groups achieved higher standing in the social order. For example, those who managed commercial enterprises gained more control over the economic ladder, while an intellectual class of modern experts, who mastered specialized realms of knowledge, gained increasing power over the nation’s social, political, and cultural agendas.

To be modern also meant to value the capacity of organized, scientific minds to solve problems efficiently. Progressive thinkers maintained that the printing press, the telegraph, and the railroad in combination with a scientific attitude would foster a new type of informed society. At the core of this society, the printed mass media, particularly newspapers, would educate the citizenry, helping to build and maintain an organized social framework. Journalists strove for the premodern ideal through a more fact-based and efficient approach to reporting. They discarded decorative writing and championed a lean look. Modern front-page news de-emphasized description, commentary, and historical context. The lead sentences that reported a presidential press conference began to look similar, whether they were on the front page in Tupelo, Mississippi, or Wahpeton, North Dakota. Just as modern architecture made many American skylines look alike, the front pages of newspapers began to resemble one another.

Finally, to be modern meant to throw off the rigid rules of the past, to break with tradition. Modern journalism became captivated by timely and immediate events. As a result, the more standardized forms of front-page journalism, on the one hand, championed facts and current events while efficiently meeting deadlines. But on the other hand, modern newspapers often failed to take a historical perspective or to analyze sufficiently the ideas underlying these events.

All of the following are the major values of the modern world EXCEPT()

A. individual self-expression

B. social order and discipline

C. the efficient solutions to problems

D. the repudiation of tradition

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