部分乙型肝炎患者会出现肾小球肾炎、关节炎等肝外症状，其机制是()A．病毒使机体免疫应

2009年全年北京市完成全社会固定资产投资4858.4亿元，比上年增长26.2%。其中，基础设施投资1462亿元，增长26%，主要投向交通运输和公共服务业，交通运输投资698.6亿元，增长15.6%，公共服务业投资434.5亿元，增长49%。

分登记注册类型看，国有内资单位完成投资2316.8亿元，比上年增长66.8%；非国有内资单位完成投资2096.4亿元，增长2.8%；外商及港澳台完成投资445.2亿元，增长5.9%。

分产业看，第一产业投资57.4亿元，增长1倍；第二产业投资411.4亿元，增长6.6%，其中工业投资406.2亿元，增长6.7%；第三产业投资4389.5亿元，增长27.8%。

分城乡看，城镇投资完成4378.2亿元，增长23.2%；农村投资完成480.2亿元，增长63.5%。

2009年全社会固定资产投资及增长速度

以下说法中，与资料相符的是（）。

A.2005-2009年北京全社会固定资产投资年均完成投资额超过4000亿元

B.2008年北京市外商及港澳台投资额超过固定资产投资的一成

C.2009年第一产业投资同比增长额最大

D.2009年第三产业投资额所占比重低于2008年

以下容易引起变态反应的有()

A．聚乙烯二醇

B．丙二醇

C．聚氧乙基代蓖麻油

D．苯甲醇

E．对羟苯甲酸酯

Whether you’re eating at a fancy restaurant or dining in someone’s home. Proper table manners are likely to help you make a good impression. According to a US expert, Emily Post, “All rules of table manners are made to avoid ugliness.”

While Henry Hitchings of the Los Angeles Times admits that good manners can reduce social conflict, he points out that mostly their purpose is protective - they turn our natural warrior-like selves into more elegant ones.

So where did table manners come from?

In medieval England, a writer named Petrus Alfonsi took the lead to urge people not to speak with their mouths full. And King David I of Scotland also proposed that any of his people who learned to eat more neatly be given a tax deduction (减除).

Disappointingly, that idea never caught on. It was during the Renaissance, when there were real technical developments, opinions of correct behavior changed for good. “None of these was more significant than the introduction of the table fork,” wrote Hitchings. “Gradually, as forks became popular, they brought the new way of eating, making it possible, for instance, to consume berries without making one’s fingers dirty.”

Forks were introduced to Britain in 1608 and 25 years later, the first table fork reached America. Yet while most of the essentials (基本要素) are the same on both sides of the Atlantic, there are a few clear differences between what’s normal in the US and what holds true in the UK. For example, in the US, when food needs cutting with a knife, people generally cut a bite, then lay aside the knife and switch the fork to their right hand. Then they pick up one bite at a time. By contrast, Britons keep the fork in the left hand and don’t lay the knife down.

Though globalization has developed a new, simpler international standard of table manners, some people still stick with the American cut-and-switch method.The Los Angeles Times noted, “They are hanging on to a form of behavior that favors manners above efficiency.”

小题1:What does the story mainly talk about?

A．The importance of proper table manners .

B．The development of table manners in Western countries.

C．Some unwritten rules of table manners in the US and UK.

D．Differences between American and British table manners.小题2:The underlined phrase “caught on” in the passage probably means ______.

A．worked in practice

B．became popular

C．drew attention

D．had a positive effect小题3:Which of the following events influenced people’s table manners most according to the article?

A．The introduction of forks.

B．The tax deduction policy.

C．The rise of the Renaissance.

D．Petrus Alfonsi’s efforts in promoting table manners.小题4:What can we conclude from the article?

A．British and American table manners are completely different from each other.

B．American people pay more attention to their table manners than British people do.

C．With globalization, the American cut-and-switch method has been abandoned in the US.

D．British people’s way of using a knife and fork may be more efficient than American people’s.

“低碳农业”是以“低消耗、低污染、低排放、高品质、高效益”等“低、两高”为特征的现代农业，彻底转变农业发展方式，合理高效利用资源和能源，建立清洁能源结构和实施清洁生产，并促进能源和资源利用技术创新、制度创新和可持续发展。显然，低碳农业是低碳经济在农业发展中的实现形式，是维护全球生态安全、改善全球气候条件，在农业领域推广节能减排技术、开发生物质能源和可再生能源的农业，具备“持续生产、安全保障、品质优良、调节气候、生态涵养”等多元功能。
根据这段文字，对“低碳农业”理解不正确的是：

A．“低碳农业”具有多方面的功能
B．“低碳农业”是现代农业的一种表现形式
C．“低碳农业”是农业发展的理想目标
D．“低碳农业”是实现低碳经济的形式之一

下列植物中既可观花又可观秋色叶的是（）。

A.枫香

B.樱花

C.银杏

D.无患子