试题与答案

诊断直立性低血压的标准是() A.直立位舒张压下降达10mmHg以上 B.直立位收缩

题型:单项选择题

题目:

诊断直立性低血压的标准是()

A.直立位舒张压下降达10mmHg以上

B.直立位收缩压下降达20mmHg

C.直立位舒张压下降达30mmHg以上

D.直立位收缩压下降达40mmHg以上

E.直立位收缩压下降达50mmHg以上

答案:

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据测算,2009年北京都市型现代农业生态服务价值为6496.21亿元,比2008年增长了3.0%。
农业经济价值为314.95亿元,占总价值的4.8%,比上年增长3.6%。农业生态经济服务价值为95.36亿元,占总价值的1.5%,比上年增长13.8%。农业生态环境服务价值为6085.9亿元,占总价值的93.7%,比上年增长2.8%。构成农业生态环境服务价值的三大生态系统中,森林为5872.6亿元,占农业生态环境服务价值的96.5%,比上年增长2.9%;农田为194.8亿元,占农业生态环境服务价值的3.2%,比上年下降0.5%;草地为18.5亿元,占农业生态环境服务价值的0.3%,比上年增长3.1%。

2009年北京都市型现代农业生态服务价值构成表   单位:亿元
指标名称 年产出价值 贴现价值
都市型现代农业生态服务价值 874.25 6496.21
一、农业经济价值 314.95 314.95
1.农业产值 140.44 140.44
2.林业产值 22.9 22.9
3.牧业产值 136.08 136.08
4.渔业产值 10.28 10.28
5.农林牧渔服务业产值 5.25 5.25
二、农业生态经济服务价值 95.36 95.36
1.观光园 15.24 15.24
2.民俗旅游 6.09 6.09
3.郊区旅游收入 74.03 74.03
三、农业生态环境服务价值 463.94 6085.9
其中:森林 250.64 5872.6
农田 194.8 194.8
草地 18.5 18.5

2009年北京农业经济价值中,按年产出价值的大小排列正确的是( )。

A.农业产值>牧业产值>渔业产值>林业产值
B.农林牧渔服务业产值>渔业产值>林业产值>牧业产值
C.农业产值>牧业产值>林业产值>农林牧渔服务业产值
D.农业产值>渔业产值>林业产值>农林牧渔服务业产值

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题型:阅读理解

阅读理解。

     At Yale University, enrollment in basic Chinese in 2005 grew rapidly, and for the first time

professors can remember, large numbers of freshmen were arriving with enough knowledge of

the Chinese language to start in second- or third-year Chinese language class, rather than basic

Chinese.

    The American interest in China is not just at the university level. In the 2006 school year, high-school

students will be offered an Advanced Placement test, which is one of the national exams American

students take for university admission, in Chinese. This is the first time Chinese is offered in the

Advanced Placement test, which is usually limited to the most important subjects that high school

students take.

    What is surprising is that earlier last year, an organization that tracks university students surveyed

high schools throughout America, asking if they planned to offer the language courses that prepare

students for the language Advanced Placement test. They expected that only a hundred high schools,

mostly in California, New York, and a few other places with large immigrant populations, would show

interest in each of the new language programs. Although that was true for the courses in Italian, Russian

and Japanese, it was not true for the Chinese language course. There were thousands of American

high schools that indicated that they planned to build their Chinese programs to levels where students

could take the Advanced Placement exam for Chinese language. The demand for courses in Chinese is

rising so rapidly that it is rapidly overtaking all other foreign languages except Spanish.

1. According to the passage many freshmen at Yale University today       

A. know enough basic Chinese          

B. needn't learn Chinese any more

C. take courses in the Chinese language  

D. go to university to study Chinese

2. For university entrance, the American high-school students       .

A. have to learn Chinese

B. learn more than one foreign language

C. take the Advanced Placement Test

D. used to have a test in Chinese

3. We can learn from the passage that        .

A. Chinese will overtake all foreign languages in American high schools

B. Americans will know more about China 

C. the U.S. government pays much attention to language studies

D. Chinese may take the place of English in American universities

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