心电图示心室颤动后，应立即（） A.静注利多卡因 B.静注异丙基肾上腺素 C

下列关于公共娱乐场所安全管理的说法中，正确的有（）。

A.公共娱乐场所内严禁带入和存放易燃易爆物品

B.严禁在公共娱乐场所营业时进行设备调试作业

C.严禁在公共娱乐场所营业时进行电气焊作业、油漆粉刷作业

D.演出、放映场所的观众厅内禁止吸烟，但可以明火照明

E.公共娱乐场所在营业时，不得超过额定人数

歧视性政府采购政策规定，政府机构要优先购买（）。

A.外国产品

B.出口产品

C.本国产品

D.名牌产品

阅读理解。

     Deputy Agriculture Secretary Kathleen Merrigan sees an epidemic (流行病) sweeping across

     America's farmland. It has little to do with the usual challenges, such as flood, rising fuel prices

and crop-eating insects. The country's farmers are getting older, and there are fewer people standing in

line to take their place. National agricultural census (普查) figures show that the fastest-growing group of

farmers is the part over 65. Merrigan is afraid the average age will be even higher when the 2012 statistics are completed.

     Merrigan, a former college professor, is making stops at universities across the country in hopes of

encouraging more students to think about careers in agriculture. Aside from trying to stop the graying of

America's farmers, her work is made tougher by a recent blog posting that put agriculture at No. 1 on a

list of "useless" college degrees. Top federal agriculture officials are talking about the posting, and it has

the attention of agricultural organizations across the country.

     "There couldn't be anything that's more incorrect," Merrigan said. "We know that there aren't enough

qualified graduates to fill the jobs that are out there in American agriculture."

     In addition, a growing world population that some experts predict will require 70% more food

production by 2050, she said.

     "I truly believe we're at a golden age of agriculture. Global demand is at an all-time record

high, and global supplies are at all-time record lows," said Matt Rush, director of the Texas Farm

     Bureau. "Production costs are going to be valuable enough that younger people are going to have the

opportunity to be involved in agriculture."

     The Department of Agriculture has programs aimed at developing more farmers and at increasing

interest in locally grown food. The National Young Farmers' Coalition has also been pushing for state and

federal policy changes to make it easier for new farmers.

     Ryan Best, president of Future Farmers of America, has been living out of a suitcase, traveling

the country and visiting with high school students about careers in agriculture. The 21-year-old Best

hopes his message-that this is a new time in agriculture-will motivate the next generation to turn

around the statistics. "Never before have we had the innovations (创新) in technology which have

led to agriculture in this country being the most efficient it has ever been," he said. "There's really a place

for everybody to fit in."

1. What is the new challenge to American agriculture?

A. Fewer and older farmers.    

B. Higher fuel prices.

C. More natural disasters.      

D. Lower agricultural output.

2. Why is Merrigan visiting universities across the country?

A. To draw federal agriculture officials' attention.

B. To select qualified agriculture graduates.

C. To clarify a recent blog posting.

D. To talk more students into farming careers.

3. According to Matt Rush, American agriculture will provide opportunities for younger people

    because__________..

A. the government will cover production costs

B. global food supplies will be even lower

C. investment in agriculture will be profitable

D. America will increase its food export

4. What do the underlined words "to turn around the statistics" in the last paragraph mean?

A. To re-analyze the result of the national census.

B. To increase agricultural production.

C. To bring down the average age of farmers.

D. To invest more in agriculture.

某年10月3日10时50分左右，A市某风景区发生一起索道钢丝绳断裂、吊厢坠落事故。此次事故造成14人死亡，22人受伤。

该索道于1994年开工兴建，1995年竣工。经检查，该索道没有遵守原劳动部颁布的《客运架空索道安全运营与监察规定》，未将设计图样送国家索道检验中心进行审查，未经验收检验，未按规定取得“客运架空索道安全使用许可证”，违规运营；在设计上多处违反《客运架空索道安全规范》，存在严重安全隐患。发生事故的当时，索道严重超载，在限乘20人的吊厢里，却挤进了35人。当该索道从下站运行到上站时，由于没有备用制动器，仅有的一套制动器失灵后，索道失控，急速冲向下站，牵引钢丝绳断裂，吊厢坠落在下站站台。当场死亡5人，在抢救过程中又死亡9人，受伤22人，多数为重伤。

请分析事故原因。

驱动桥应具有合适的（），使汽车具有良好的动力性和经济性。

A.减速比

B.转向角

C.前束角