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问题 选择题

He was so tired that he didn't want to do          .[ ]

A. something

B. anything

C. nothing

D. everything

答案

答案：B

单项选择题 B型题

原始单核细胞（）。

A.胞体圆，边缘有瘤状突起，胞浆油墨蓝无颗粒

B.胞体圆，胞核圆形紫色偏于一侧，胞浆呈透明天蓝色

C.胞体较大不规则，胞核折叠，胞浆灰蓝色

D.胞体圆形，胞核类圆，胞浆很少淡蓝色，近核处有透明区

E.胞体较大，胞浆量较多，有核周淡染区，深蓝色，有空泡
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填空题


The United States counts its population every ten years, and each census reveals that the racial and ethnic mix is changing dramatically, so by the year 2050, the "average" American will not be descended from (1) , but the majority of U. S. residents will trace (2) ancestry to Africa, Asia, the Hispanic world, the Pacific Islands, or the Middle East. Once the United States was a microcosm of European nationalities, (3) the United States is a microcosm of the world. The United States is (4) considered a "melting pot" society by many of its residents. (5) , many people prefer the term "salad bowl." They use this (6) to describe American society. American society will soon be (7) nonwhite. "Melting pot" implies that the different ethnic groups blend together (8) one homogeneous (9) , "salad bowl" (10) that nationalities, like the ingredients in a mixed green salad, retain their cultural (11) . Earlier generations of (12) believed they had to learn English quickly not only to survive but also for (13) .
Now, many immigrant groups do not (14) the same need. Because there are many places in America (15) you can work, shop, get medical care, marry, divorce and die without knowing English. (16) , Chinatown in San Francisco and New York. Also, Los Angeles has many Vietnamese immigrants and immigrants from Mexico. (17) , many immigrant groups want their children to know their (18) culture. Many Hispanics, for instance, want their children to learn (19) English and Spanish and study the Spanish language in school. They are fighting for the (20) to bilingual education in many communities. In many communities they are in the majority.
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