题目

As we all know, the environment around us is getting worse and worse. In some places we can’t see fish  1  in the river or trees on the hills. Some people even have no clean water to drink.     Recently, a new life style called low carbon（低碳）life is spreading every corner of our country. The meanings of low carbon are  2  energy and no waste. It is such an important project that I can’t wait to express my ideas on how to promote it.     First, we should    3  a no-car day every week in our school. Because cars not only cause serious air pollution but also wa读下图，回答问题。（1）简述图中大裂谷的走向及其成因。（2）简述非洲缺粮严重的原因。