____ the crisis of economy getting more

控制中心负责人对前（）录像资料清晰度、完整性及中心值班员夜间值班状态进行抽查。

当事人双方签订了买卖合同，在合同履行期限届满前，一方当事人确切得知另一方当事人不准备履行此合同，则该当事人的下列行为正确的是()。

A．要求不准备履行合同的另一方当事人用其财产抵押

B．要求另一方当事人变更合同

C．等到合同履行期届满后，若另一方当事人不履行合同，则给予一定的催告期，在催告期内还不履行合同的，则通知另一方当事人解除合同

D．要求另一方当事人提供履约担保

患儿男，3岁，家长偶然发现患儿站立时双肩倾斜前来就诊。

脊柱侧凸患者的临床表现不包括（）

A.两肩不等高，肩胛一高一低

B.脊柱偏离中线

C.腰前屈时两侧背部不对称，即"剃刀背征"

D.呼吸困难

E.尿频、尿急

F.骨盆倾斜

摩尔定律是指每隔（），硬件就要升级一次。

A、六个月

B、十二个月

C、十八个月

D、三十六个月

In a democratic society citizens are encouraged to form their own opinions on candidates for public office, taxes, constitutional amendments, environmental concerns, foreign policy, and other issues. The opinions held by any population are shaped and manipulated by several factors: individual circumstances, the mass media, special-interest groups, and opinion leaders.

Wealthy people tend to think differently on social issues from poor people. Factory workers probably do not share the same views as white-collar, nonunion workers. Women employed outside their homes sometimes have perspectives different from those of full-time homemakers. In these and other ways individual status shapes one’s view of current events.

The mass media, especially television, are powerful influences on the way people think and act. Government officials note how mail from the public tends to "follow the headlines. " Whatever is featured in newspapers and magazines and on television attracts enough attention that people begin to inform themselves and to express opinions.

The mass media have also created larger audiences for government and a wider range of public issues than existed before. Prior to television and the national editions of newspapers, issues and candidates tended to remain localized. In Great Britain and West Germany, for example, elections to the national legislatures were usually viewed by voters as local contests. Today’s elections are seen as struggles between party leaders and programs. In the United States radio and television have been beneficial to the presidency. Since the days of Franklin D. Roosevelt and his "fireside chats," presidents have appealed directly to a national audience over the heads of Congress to advocate their programs.

Special-interest groups spend vast sums annually trying to influence public opinion. Public utilities, for instance, tried to sway public opinion in favor of nuclear power plants. Opposed to them were citizens’ organizations that lobbied to halt the use of nuclear power. During the 1960s the American Medical Association conducted an unsuccessful advertising campaign designed to prevent the passage of Medicare.

Opinion leaders are usually such prominent public figures as politicians, show-business personalities, and celebrity athletes. The opinions of these individuals, whether informed and intelligent or not, carry weight with some segments of the population. Some individuals, such as Nobel Prize winners, are suddenly thrust into public view by the media. By quickly reaching a large audience, their views gain a hearing and are perhaps influential in shaping views on complex issues.

The expression "follow the headlines" shows（）

A. people seldom have time to read newspaper articles

B. people think the headlines contain the most important information

C. people often get their opinions from newspapers or television

D. most people look on newspapers or TV as misleading