(单选题)

Why can’t the northern half of the earth escape for long?

A.Because the land is covered with water.

B.Because the light and heat from the sun can not reach the earth.

C.Because people there can not live at the temperature of zero.

D.Because wars break out among countries.

参考答案：B

参考解析：

细节理解题。根据文章第三段第六句起“Because of the explosions, the sun is hidden by clouds of dust, and temperatures around the world fall to almost zero. Crops are ruined. The sun won’t be seen in many years. Wars break out as countries fight for food.”南半球数以万计的人已经死了，而北半球也逃脱不了这种厄运。因为太阳多年照不到地球，地球上的温度几乎降到了零度，植物遭到了破坏，食物缺乏，导致战争。温度降低、植被破坏、食物匮乏、战争爆发，这一切都是因为太阳照不到地球。故选B。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语