Question

  Scientist Florence Wambugu works with farmers in Kenya, a country in East Africa. She helps them grow bigger and better crops. Wambugu is especially interested in finding simple ways to produce more food.

In the past ten years,Wambugu has spent much of her time studying sweet potatoes, which are an important food in her part of Kenya. A virus kept attacking the plants. It stopped the sweet potatoes from growing well. Because of the virus,some farmers lost three quarters of their crops.

Wambugu went to war against the virus. Her search for a way to save the sweet potatoes led to a lab in St. Louis, Missouri.

  The lab mainly works on genes, the chemical " computer programs" found in the cells of living things. Genes tell a plant to produce pink flowers or an animal to grow black hair. Now scientists have found ways to move genes from one living thing to another. That process is called genetic engineering.

  Wambugu spent three years in the lab. As a result, she created a sweet potato plant that could fight off the virus. Wambugu tested her research in Kenya, and her plants produced won?derful sweet potatoes.

  That's just the beginning, Wambugu believes. Genetically modified foods, she thinks,could help farmers in poor countries grow badly-needed crops，thus，fewer people will go hun?gry-

(   ) 1 . The text is written mainly to        .

   A.tell us sweet potatoes are in danger of being attacked by virus

   B.introduce Wambugu's contribution to genetic engineering

   C.introduce a new way of killing plant viruses

   D.tell how hard Wambugu worked in her lab for three years

(   ) 2. What caused Wambugu to set up a lab in St. Louis, Missouri?

   A.Her wish to save sweet potatoes inKenya.

   B.Her great interest in genetic engineering.

   C.her love for sweet potatoes.

   D.Her interest in plant life.

(   ) 3. The fourth paragraph mainly explains what        is.

   A. a crop virus   B. chemical technology

   C.  a computer program   D. genetic engineering

(   ) 4. What is Wambugu's attitude toward "genetic engineering"?

   A.It will help more hungry people.

   B.It should be carefully used.

   C.It has more disadvantages than advantages.

   D.It is a too expensive technology at present.

(   ) 5. According to the passage, which of the following is NOT true?

  A.Florence Wambugu often helps farmers with their work.

   B.Florence Wambugu has studied sweet potatoes for 10 years.

   C.Genes can be moved from one thing to another.

   D.Florence Wambugu has succeeded in creating a genetically modified sweet pota?toes.

Answer 1

 1 ~ 5 BADAA     

A篇讲述了科学家Wambugu研究抗番薯病毒的方法，使番薯产量增加，减少非洲饥饿的人数，同时为基因工程做出了贡献。同时解释了什么是基因工程及其作用。

1. B意图揣摩题。科学家Wambugu利用基因工程潜心研究抗番薯病毒的方法，使番薯产量增加，从而使非洲挨饿的人数减少。她为基因工程做出了贡献。

2.A细节理解题。由第三段可知答案。

3.D主旨大意题。作者在第四段中先解释了基因是什么，然后又举例说明科学家可以利用基因做哪些工作，然后总结什么是基因工程。所以D为正确答案。

4.A深层理解题。由文章最后一段可知。

5.A事实判断题。科学家Wambugu通过研究基因来使番薯能抗病毒和增产，并不是经常帮农民干活，所以A选项说法不对。