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篇講述了科學家Wambugu研究抗番薯病毒的方法，使番薯產(chǎn)量增加，減少非洲饑餓的人數(shù)，同時為基因工程做出了貢獻。同時解釋了什么是基因工程及其作用。

1. B意圖揣摩題�？茖W家Wambugu利用基因工程潛心研究抗番薯病毒的方法，使番薯產(chǎn)量增加，從而使非洲挨餓的人數(shù)減少。她為基因工程做出了貢獻。

2.A細節(jié)理解題。由第三段可知答案。

3.D主旨大意題。作者在第四段中先解釋了基因是什么，然后又舉例說明科學家可以利用基因做哪些工作，然后總結(jié)什么是基因工程。所以D為正確答案。

4.A深層理解題。由文章最后一段可知。

5.A事實判斷題。科學家Wambugu通過研究基因來使番薯能抗病毒和增產(chǎn)，并不是經(jīng)常幫農(nóng)民干活，所以A選項說法不對。