增值税是以商品（含应税劳务）在流转过程中产生的（）为计税依据征收的一种流转税。 A.

对探测器的性能要求，错误的是（）

A.线性好

B.动态范围大

C.工作性能稳定

D.荧光脉冲时间长，便于测量

E.X线吸收、转换能力强

根据下列文字资料回答问题。

据海关统计数据显示，2004年1～10月，医药产品进出口贸易总额为87.39亿美元，同比增长19.04%。其中出口45.61亿美元，增长13.11%，进口41.78亿元，增长25.3%。 从贸易结构看，2004年前10个月医疗器械占医药产品贸易总额的比例为41.5%，其次是化学原料药为31.68%，中成药和卫生材料所占比重在8%左右。从进口结构看，进口最大的仍然是医疗器械，占医药产品进口金额的比例达到53.32%，其次是化学原料药的16.44%，再次是中成药的14.32%和西成药的12.73%。在出口的产品结构方面，45.65%为化学原料药， 30.67%为医疗器械，卫生材料所占比例也达到了12.77%。 另据海关统计数据显示，2005年1～9月中药出口总额突破5亿美元，同比增长18.23%。对亚洲、北美洲和欧洲的中药出口分别占我国中药出口总额的66.08%、14.56%和14.46%；对南美洲、非洲和大洋洲的出口占我国中药出口总额的4.9%。

根据下列材料，下列说法正确的为（）。

A．2004年1～10月，医疗器械进口贸易总额约占同期医药贸易总额的3/5

B．2004年化学原料药进口年增长率高于医疗器械的进口年增长率

C．2004年1～10月，医疗器械的进出口贸易差额为8.29亿美元

D．卫生材料出口贸易总额约是化学原料药进口总额的32.6%

The "standard of living" of any country means the average person’s share of the goods and services which the country produces. A country’s standard of living, (1) , depends first and (2) on its capacity to produce wealth." Wealth" in this sense is not money, for we do not live on money (3) on things that money can buy. "Goods" such as food and clothing, and "services" such as transport and " (4) ". A country’s capacity to produce wealth depends upon many factors, most of (5) have an effect on one another. Wealth depends (6) a great extent upon a country’s natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a (7) climate; other regions possess none of them.

Next to natural resources (8) the ability to turn them to use. China is perhaps as well (9) as the USA in natural resources, but suffered for many years from civil and (10) wars, and (11) this and other reasons was (12) to develop her resources. (13) and stable political conditions, and (14) from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well (15) by nature but less well ordered.

A country’s standard of living does not only depend upon the wealth that is produced and consumed (16) its own borders, but also upon what is indirectly produced through international trade. (17) , Britain’s wealth in foodstuffs and other agricultural products would be much less if she had to depend only on (18) grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would (19) be lacking. A country’s wealth is, therefore, much influenced by its manufacturing capacity, (20) that other countries can be found ready to accept its manufactures.

5（）

A.it

B.them

C.which

D.that

脱毛衣时有静电，这是因为身穿的衣服之间经长时间的充分接触和摩擦而起电。由于相接触的两件衣服所带的电荷有相反的极性，所以在未脱衣之前人体不显静电，脱去外面的一件后，就显出了静电。当将尼龙纤维的衣服从毛衣外面脱下时，人体可以带（）伏以上的负高压静电。

A.几十

B.几百

C.几千

D.一万