问题 单项选择题

英国帝国癌症研究所的研究人员最近宣布,他们利用癌症病人的DNA(脱氧核糖核酸)制成了一种抗癌疫苗,这种疫苗能刺激人体的免疫系统。利用疫苗抗癌是医学家们急于实现的目标之一。欧美的医学家们正在就几种可能的抗癌疫苗进行试验。英国研究人员新研制的这种疫苗是利用生命的基本遗传物质DNA来制备的具有人格化的疫苗,因而尚属首次。 这种疫苗称为“具有人格化的疫苗”的原因是( )。

A.这种疫苗利用癌症病人的DNA制成

B.这种疫苗能刺激人体的免疫系统

C.这种疫苗能区分癌细胞和健康细胞

D.这种疫苗对癌症病人没有副作用

答案

参考答案:A

解析: 由该段文意可知这种疫苗是利用癌症病人的DNA制成的,故称它“具有人格化”,由此判断,只有A项符合。

阅读理解

Like a backward tape, time returns to my mom's teens.She is waiting for admission results from a famous high school.She has studied for the test but with joy, since she feels no suffering in learning.Suddenly I spy her jumping and laughing, waving a paper in her hand while her family stands nearby, more shocked than happy.No one else from their village has ever passed the test.

Later, at her new high school, I proudly watch as she continues to rise to the top.Many of her essays are published in newspapers, and her classmates seek her advice when a test is approaching. She never refuses them, and I feel honored to be related to such an intelligent person.

As I walk with her through her journey, I finally come to the point I have been looking forward to most: her life in America. After passing several tests and finding a kind boss to sponsor her, she becomes a college student at University of California, Los Angeles. At first, I sense her loneliness and panic as she tries to adapt to her new surroundings.Though her English is broken and she knows little about American culture, I can tell she is more than grateful to be here. Here she has access to electricity and running water, and most importantly, better schools. At UCLA, she has so many opportunities to grow and advance in her field.

Her journey to America was for just one reason: education.Though having an education will better her life, I know she doesn't do it for herself.My mom wants her children to have an easier life that will not require hard labor.I see what my mom goes through, and I'm filled with gratitude that she has made the brave choice to move here.

小题1:According to the first paragraph, the writer's mother considers learning to be        .

A.easy and joyful

B.bitter but rewarding

C.costly and boring

D.exciting but fruitless小题2:Which of the following does the writer's mother do at high school?

A.Working as a newspaper deliverer.

B.Feeling proud of her intelligence.

C.Working hard to be honored and awarded.

D.Giving her classmates advice before tests.小题3:How does the writer's mother pay for her college education?

A.By doing a part-time job.

B.By asking her parents for support.

C.With the financial support from a kind boss.

D.With the help from her teachers and classmates.小题4:What is the final aim of the writer's mother's going to America?

A.To accumulate wealth.

B.To benefit her children.

C.To make her parents live better.

D.To become famous in her field of study.

单项选择题 A1/A2型题