A-A+
Algae are important for the colonization of Ve
问题详情
Algae are important for the colonization of Venus since ______.
A.they can be bred in any conditions
B.they produce oxygen
C.they can easily be carried in spaceship
D.they can make the carbon dioxide in a fairly short time请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:B
解析:本题是细节题。文中第三段讲Sagan proposed that algae,organisms that can live in extremely hot or cold atmospheres and at the same time produce oxygen,should be bred in conditions similar to those on Venus. 海藻能够在极热或极冷的气候下生存,并且能够产生氧气,而据文章第三段讲:金星上没有氧气,且气候异常,因此将海藻植于金星是非常重要的开发手段,所以B选项是正确答案。A选项根据常识可以排除,C选项不是理由,试想仅能轻易携带而于开发无益的东西有什么用呢? D选项与文章内容不符,海藻不产生二氧化碳。