根据短文内容，选择最佳答案，并在答题卡上按要求作答。

66. Who won the 2012 Nobel Prize in Medicine?

A. Sir John Gurdon.                             B. Shinya Yamanaka.

C. Sir John Gurdon and Shinya Yamanaka             D. Gurdon’s science teacher.

67. In what order are the follo wings mentioned in the passage?

a. create the sheep Dolly                                             

b. take a cell from an adult frog

c. use a person’s skin to create stem cells            

d. move a frog’s genetic information into an egg cell

e. grow into a clone of a frog

A. b-a-c-d-e       B. b-d-e-a-c       C. b-d-a-c-e     D. b-e-d-a-c

68. What does the underlined word “ridiculous” mean?

   A.无知的       B.无谓的       C.荒废的      D.荒谬的

69.According to the passage , which statement is true?

   A. As a boy, Gurdon was told he was hopeful.

   B. Gurdon ranked first at his high school in biology.

   C. It’s impossible for the doctors to repair a patient’s heart after a heart attack.

   D. In spite of his teacher’s criticisms, Gurdon kept working hard.

70. What’s the main idea of the passage?

A. Ninety percent of the time things don’t work.     

B. Stem cells were created.

C. Life is full of surprises. 

D. How to know cells actually work.

参考答案66~ 70 CBDDC