问题 读图填空题

有一种病人不能抵抗疾病,只能生活在无菌室里,如果离开无菌室,就会受到病毒感染而死亡。原因是其体内基因缺陷导致缺乏腺苷酸脱氨酶(ADA)。1990年,美国对一位患有该病的4岁小姑娘实施了基因治疗,其治疗方案如下图所示。请回答下列问题:

(1)图中的正常基因是指____________。

(2)经过2年的持续治疗,终于使她恢复了健康,这种治疗方法利用的遗传学原理是___________。

①基因突变  ②基因重组  ③染色体变异

(3)图中的离体细胞最好用本人的组织细胞,原因是_____________。

(4)通过此方法康复的患者,其所生子女体内是否含有上述“正常基因”?(不考虑配偶方的基因)____,为什么?_____________。

答案

(1)能合成腺苷酸脱氨酶(ADA)的基因

(2)②

(3)导入体内后无排斥反应

(4)不含有        体细胞中发生的变异一般不能通过有性生殖传给子代

阅读理解

In many parts of the world, people live to a healthy old age. What is the secret of their long lives?

Three things are very important: fresh air, fresh food and a simple way of life. People who live in Himalayas(喜玛拉雅山) are famous for their long and healthy lives. They work near their homes in the clean mountains. They don’t have buses, cars or trains. They don’t sit all day in busy offices. They take more exercise and eat less food than people in the cities. They eat vegetables grown by themselves. They drink milk taken from their own cows. For years, the Hunzas of the Himalayas don’t need doctors, for there is not much illness. They are happy and healthy people.

小题1:Which is NOT the life of the people living in Himalayas?

A.They work hard in the fields.

B.They eat vegetables grown by themselves.

C.They take more exercise and eat more food than people in the cities.

D.They drink milk taken from their own cows.小题2:Which one is NOT true about the people living in Himalayas?

A.They live a simple life in the mountains.

B.They grow vegetables and milk cows themselves.

C.When they are ill, they don’t go to see doctors.

D.They don’t sit all day in busy offices.小题3:Which is NOT the secret of long life?

A.Fresh air.

B.Fresh food.

C.A simple way of life.

D.A simple way of eating.小题4:What are the Hunzas famous for?

A.Vegetables.

B.Milk.

C.Food.

D.Their long and healthy lives.小题5:They do not need doctors, for ________ .

A.the doctors are not good

B.there is not much illness

C.there is no illness

D.they are happy

单项选择题