问题 读图填空题

(3分)在血液的成分中,有运输养料和废物功能的是             ,在显微镜下观察,无细胞核、形状不规则的是               。人类的ABO血型有四种,输血以输         为原则。

答案

血浆   血小板    同型血

血液分为血浆和血细胞,血浆具有运载血细胞,运输养料和废物的功能,血细胞有红细胞、白细胞和血小板,红细胞是数量最多的,白细胞是最大的、最少的血细胞,血小板没有细胞核,形状不规则,ABO血型有A型、B型、O型和AB型,输血的原则是同型输血。

多项选择题
单项选择题

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.

9()

A.off

B.known

C.done

D.furnished