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Fireworks are a big part of Fourth of July celebrations in the United States, as hundreds of thousands of Americans enjoyed public pyrotechnic displays across the country Sunday night to celebrate the U.S. birthday. The holiday throws the spotlight on another annual campaign ,an effort to completely ban consumer fireworks in the United States.As Americans around the country watched July Fourth fireworks celebrations, debate has been simmering about whether individuals should be allowed to buy fireworks to celebrate privately. Seven U.S. states prohibit sales of all consumer fireworks. A coalition of groups, led by James Shannon, president of the non-profit fire safety group, the National Fire Protection Association, says that ban should be extended to include the entire United States. "Those fireworks axe inherently dangerous products," he said. "There might be another problem with some of them being designed defectively, so that they are particularly dangerous. But even when they’re designed to do what they’re supposed to do and do it, they can be very, very dangerous products. "Other members of the coalition include the International Fire Chiefs Association and the American Academy of Pediatrics, which has focused on the dangers fireworks pose to children.The U.S. Consumer Product Safety Commission, an independent federal regulatory agency, says fireworks-related accidents in the United States in 2002 killed four people and injured about 8, 800 others in the United States. About haft of the people injured were children, a fact pointed to by Mr. Shannon. "I don’t think serious injury is as American as apple pie, if it’s avoidable. And particularly, if we’re talking about children, thousands and thousands of children, "he said.But fireworks have strong defenders, such as the American Pyrotechnic Association, which says that they are becoming more and more popular in the United States. Officials with the association say that fireworks use in the United States has more than tripled since 1990, to nearly 100-kilograms in 2003. And Ann Crampton, spokeswoman for the National Council on Fireworks Safety, says fireworks are a big part of Fouth of July celebration and their use should not be banned. But Ms. Crampton also says people should exercise care when using them. "We know that millions of people are going to be celebrating with fireworks on the Fourth of July, "she said. "It’s become part of a symbol of this country. Many thousands of people, millions of people, enjoy going to public displays. But there are also people that like to be hands-on and do it themselves in their backyards. We feel they can be safe and they can be injury-free if they choose the right product, know what to choose,what to stay away from."Most of the fireworks sold in the United States come from China. According to the U.S. Census Bureau, Chinese fireworks imports to the United States in 2003 amounted to more than $157-million. Ms. Crampton says the U.S. pyrotechnics industry has been working with Chinese manufacturers to make fireworks safer. "And about 15 years ago, a group was formed, called the American Fireworks Standards Laboratory, to work with Chinese manufacturers, to make sure that the product that they were making meets the safety standards that are required here," she said.The National Fire Protection Association has been lobbying against consumer fireworks sales since 1910. Their efforts are not going to be made any easier by Consumer Product Safety Commission statistics showing that the number of fireworks-related deaths and injuries in the United States has actually fallen in recent years. Which group in the following has been lobbying against consumer fireworks sales since 1910()

A. The U.S. Consumer Product Safety Commission.
B. The American Pyrotechnic Association.
C. National Council on Fireworks Safety.
D. The National Fire Protection Association.

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应作消化道隔离的病人是

A. 流感病人
B. 麻疹病人
C. 伤寒病人
D. 结核病人
E. 流行性乙脑病人

甲、乙双方签订一份标的额为50万元的合同。为保证合同履行,双方约定定金担保。根据《担保法》的规定,该合同定金数额最高不得超过( )万元。

A. 10
B. 15
C. 20
D. 25

China and Thailand are fighting fresh outbreaks of the highly contagious bird flu, which killed 24 people in Southeast Asia earlier this year. Authorities in both China and Thailand assured frightened residents the new outbreaks of the deadly H5N1 strain of the avian flu were under control and the threat of a mass epidemic is unlikely. There have been no cases of transmission to humans in either country so far.In China, officials say the virus was discovered on a farm approximately 300 kilometers west of Shanghai. Residents of the infected farm have been quarantined and all poultry within two kilometers have been killed.Officials say they will strengthen a quarantine of local poultry markets to further reduce the risk to people in the area. Julie Hall of the World Health Organization says Chinese authorities are acting to contain the virus. "They’ve been able to detect these birds are getting sick and they’ve put in place the correct measures and enhance surveillance," she says.China announced it wiped out the lethal strain of the bird flu four months ago and blamed this most recent outbreak on migratory birds.In Thailand lab tests confirmed outbreaks on two farms in towns near Bangkok. Thousands of chickens on those farms have been destroyed and officials insist there is no evidence the disease has spread. This is the first confirmed outbreak in Thailand since April. Thailand is the world’s fourth largest exporter of chickens and bans on its poultry exports have damaged the national economy.Previous outbreaks of the deadly flu in Asia this year led to the destruction of 100 million fowl and fueled concerns of massive human fatalities. Sixteen people died in Vietnam and another eight in Thailand.The deadly H5N1 strain of the avian flu was first discovered in humans in Hong Kong in 1997. The flu is transmitted from live poultry to humans but doctors say it cannot be spread in cooked food and the risk of infection remains slight. When was the deadly avian flu first discovered in humans in the world()

A. 1997.
B. 1998.
C. 2003.
D. 2004.

相反的意义是( )

A. 一种药物能消除或减轻另一种药物的毒性或副作用
B. 一种药物的毒性或副作用,能被另一种药物减轻或消除
C. 药物配合主药,互相增强作用
D. 两种药物合用能相互抑制、降低或丧失药效,属配伍禁忌
E. 两种药物合用,能产生毒性反应或者副作用,属配伍禁忌

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