A) The planet must be as big and heavy as the earth.
C) Double stars can provide steady light and heat.
4. What kind of planet might NOT support life?
B) Stars similar to our sun.
D) Planets with proper conditions.
A) it is impossible for life to exist on planets.
C) life could exist on only one planet in a million.
KEY: CBCAD
【2015年职称理工类英语阅读理解备考之经典练习(三)】相关文章:
最新
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01