---The current international financial crisis is affecting most countries in the world.

---Would it be at least several years ____ everything returns to normal?

A．when

B．that

C．since

D．before

“节能减排”、“低碳生活”、“绿色环保”等词语体现了人们对于环保节能意识的日益扩大。低碳消费成为一种时尚，由此带动了低碳产业的发展和壮大。这表明（）①消费对生产具有导向作用②每一位消费者都做到了低碳消费③一个新消费热点的出现能带动相关产业的成长④绿色健康消费被越来越多的人认同

A.①②③

B.②③④

C.①③④

D.①②④