问题 单项选择题 A1/A2型题

诊断"多毛细胞"的最有效手段为()

A.细胞化学染色

B.染色体核型分析

C.骨髓象和血常规综合分析

D.扫描电镜超微结构检查

E.骨髓组织病理检查

答案

参考答案:D

解析:多毛细胞白血病超微结构检验:扫描电镜(SEM)示毛细胞表面有较多的散射的细长毛状突出,最长可超过4μm,延伸的"毛"有交叉现象,部分细胞表面呈皱褶状突起。透射电镜(TEM)示毛细胞表面有长绒毛和伪足。

阅读理解

阅读理解。

     Are you interested in country music? I like it very much! It will take me away for a while after I am

tired. The guitars and songs will take me to mountains and fields.

     Country music usually talks of everyday life and feelings. It's the spirit of America, easy to understand,

slow and simple.

      Country music developed in the Southern United States. It was the folk music of American

countryside. Many of songs tell about the lives of farmers.They talk about love, crops or death.

      The life of the countryside can be hard, so the words in country music are often sad. At first, people

played the music only at family parties. But it became more popular later. In the 1920s, people played

country songs on the radio, and they made them into records.

     When people in the countryside moved to towns and cities to look for work, they took their music

with them. Country music continued to change and became popular across America.

     John Denver was one of America's most famous country singers in the 1970s. His song "Take Me

home, Country Roads" is well-known and people still play it today.

1. Country music is usually about _____. [ ]

A. everyday life and feelings

B. farmers' feelings

C. the lives of workers

2. Country music developed _____. [ ]

A. in John Denver's city

B. in the Southern United States

C. in the Northern United States

3. People began to make country song records _____.[ ]

A. in the 1920s

B. in 1920

C. in the 1970s

4. Why did Country music become popular in America? [ ]

A. Because city people liked the music.

B. Because farmers moved to cities with their music and it continued to change.

C. Because country music talked about city people's lives.

5. Who is famous for the song "Take Me Home, Country Roads"? [ ]

A. A farmer in the countryside.

B. A person who moved to towns.

C. John Denver.

单项选择题