问题：
[单选题] The Klondike was the scene of one of the biggest gold rushes the world has ever known.
A locationB viewC eventD landscape问题：
[单选题] Since 1959 more and more people are in the market for the Barbie doll.
A RightB WrongC Not mentioned问题：
[单选题] Since the birth of the Barbie doll it has served as a sign to show the tendency of the fashion.
A RightB WrongC Not mentioned问题：
[单选题] According to the third paragraph，what will happen when the underground heat does not dis—appear?
A Coal heats up on its Own and catches fire and burns．B The underground oxygen will be used up．C Poisonous fumes and greenhouse gases wm be accum...问题：
[单选题] It can be felt from the description in the 2nd paragraph that the author
A admires the beauty of the snowflakes．B dislikes the changing growth history of the snowflakes．C has a particular feeling for those flower—like ...问题：
[单选题] 请在第____处填上正确答案。
A He says there is emerging evidence that children absorb low—level radiation at a rate more than three times that of adults．B By the year 20004 it...问题：
[单选题] The committee was asked to render a report on the housing situation.
A copyB publishC furnishD summarize问题：
