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Text 3
Tobacco’s public image couldn’t be more stained these days, given the war on cigarettes in the courts, federal and state governments, the medical establishment — even in Doonesbury. But the tobacco plant is not an irredeemable never-do-well. Because its genetic makeup is fairly straightforward and well understood, scientists believe tobacco could turn out to be the perfect blotch factory for protein-based drags. By splicing human genes — a technique developed in the early 1990s — researchers have enabled tobacco plants to produce a number of drugs and vaccines and even human blood components. Within 10 years, researchers are hopeful that tobacco farmers might be raising millions of acres of biofactories rather than "the killer weed".
The latest breakthrough in tobacco "pharming" may bring such a vision one step closer to reality. Scientists at Monsanto Co. (MTC) reported in the March issue o
A. Somatotropin is used to treat dwarfism.
B. Nuclei is far less numerous component.
C. Chloroplast is responsible for converting light into food.
D. Somatotropin is not of hormone.

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Text 3
Tobacco’s public image couldn’t be more stained these days, given the war on cigarettes in the courts, federal and state governments, the medical establishment — even in Doonesbury. But the tobacco plant is not an irredeemable never-do-well. Because its genetic makeup is fairly straightforward and well understood, scientists believe tobacco could turn out to be the perfect blotch factory for protein-based drags. By splicing human genes — a technique developed in the early 1990s — researchers have enabled tobacco plants to produce a number of drugs and vaccines and even human blood components. Within 10 years, researchers are hopeful that tobacco farmers might be raising millions of acres of biofactories rather than "the killer weed".
The latest breakthrough in tobacco "pharming" may bring such a vision one step closer to reality. Scientists at Monsanto Co. (MTC) reported in the March issue o
A. Tobacco’s public image will never change.
B. Chloroplast will make tobacco change its social role.
C. Nuclei is more important than chloroplast.
D. DNA Dilemma is very optimistic.

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Public image refers to how a company is viewed by its customers, supplies, and stockholders, by the financial community, by the communities in which it operates, and by the government. Public image is controllable to a considerable extent, just as the product, price, place, and promotional efforts are.
A firm’s public image plays a vital role in the attractiveness of the film and its products to employees, customers, and to such outsiders as stockholders, suppliers, creditors, government officials, as well as diverse special groups. With some things it is impossible to satisfy all the diverse publics: for example, a new highly automated plant may meet the approval of creditors and stockholders, but it will undoubtedly find resistance from employees who see their jobs threatened. On the other hand, high-quality products and service standards should bring almost complete approval, while low quality products and false claims would be widely looked down upon.
A
A. attract
B. distract
C. propose
D. lose

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Public transit. In North America, public transportation has been the major casualty of the commitment to the automobile. Ridership on public transportation declined in the United States from 23 billion per year in the late 1940s to 7 billion in the early 1990s. At the end of World War I, U.S. cities had 50,000 kilometers of street railways and trolleys that carried 14 billion passengers a year, but only a few hundred kilometers of track remain. The number of U. S. and Canadian cities with trolley service declined from about fifty in 1950 to eight in the 1960s: Boston, Cleveland, New York, New Orleans, Philadelphia, Pittsburgh, San Francisco, and Toronto.
Buses offered a more flexible service than trolleys, because they were not restricted to operating only on fixed tracks. General Motors acquired many of the privately owned streetcar companies and replaced the trolleys with buses that the company made. But bus riders

[单项选择]阅读下面程序 public class ForLoopStatement { 　public static void main(String[] args) { 　　　int i,j; 　　　for(i=1;i＜5;i++){　　　　　　　　　　　　　　　　　　　　 　 //i循环 　　　　　for(j=1;j＜=i;j++)System.out.print(i+"*"+j+"="+i*j+" ")； //j循环 System.out.println（　）； } } } 程序完成后，i循环和J循环执行的次数分别是
A. 4,10
B. 8,9
C. 9,8
D. 10,10

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Take the case of public education alone. The principal difficulty faced by the schools has been the tremendous increase in the number of pupils. This has been caused by the advance of the legal age for going into industry and the impossibility of finding a job even when the legal age has been reached. In view of the technological improvements in the last few years, business will require in the future proportionately fewer workers than ever before. The result will be still further raising of the legal age for going into employment, and still further difficulty in finding employment when that age has been attained. If we cannot put our children to work, we must put them in school.
We may also be quite confident that the present trend toward a shorter day and a shorter week will be maintained. We have developed and shall continue to have a new leisure class. Already the public agencies for adult education are swam
A. should allocate Federal funds for public education
B. should demand that local communities provide support
C. should raise taxes to meet the needs of public education
D. should first of all solve the problem of unemployment

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请阅读下面程序
public class ExampleStringBuffer{
public static void main(String []args){
StringBuffer sb=new StringBuffer("test");
System.out.println("buffer="+sB) ;
System.out.println("length="+sb.length（　）);
}
}
程序运行结果中在"length="后输出的值（）

A. 10
B. 4
C. 20
D. 30

[单项选择]It can be inferred from the text that public services______.
A) have benefited many people C) are the focus of pubhc attention
B) are tin improper subject for humor D) have often been the laughing stock


A. It can be inferred from the text that public services______.
B. have benefited many people
C. are tin improper subject for humor
D. are the focus of pubhc attention
E. have often been the laughing stock

[单项选择]TEXT A The art of public speaking began in ancient Greece over 2,000 years ago. Now, twitter, instant messaging, e-mail, blogs and chat forums offer rival approaches to communication—but none can replace the role of a great speech. The spoken word can handle various vital functions: persuading or inspiring, informing, paying tribute, entertaining, or simply introducing someone or something or accepting something. Over the past year, the human voice has helped guide us over the ups and downs of what was certainly a stormy time. Persuasion is used in dealing with or reconciling different points of view. When the leaders met in Copenhagen in December 2009, persuasive words from activists encouraged them to commit themselves to firmer action. Inspirational speeches confront the emotions. They focus on topics and matters that are close to people’s hearts. During wars, generals used inspiring speeches to prepare the troops for battle. A speech that conveys knowledge and enhances under
A. to convince people in a debate.
B. to inform people at a presentation.
C. to advise people at work.
D. to entertain people at a wedding.