After three weeks' adjustment to the new environment, he managed to accustom himself to

be more _____with people. [      ]

A. in relief          

B. at ease          

C. in peace        

D. at stake

消费者不会主动购买保险商品，而在事故发生后方知保险必要，这就表明它是（）。

A.一种非渴求商品

B.一种无形商品

C.异质性商品

D.隐型消费的产品