Explain language points in the reading passage.
1. have you ever considered how weak humans are compared with a volcano,
hurricane or earthquake ?
你是否想过， 和火山，飓风或地震相比人类是何等脆弱。
consider 思考, 主要用于：
consider +名词/-ing形式:
He is considering studying abroad.他正在考虑出国留学。
Consider + wh-:
