– What’s the matter? You really look down.

– _________.

A．Why, I always look up to you 　

B．Me? I never look down upon anybody

C．I am looking for my pen on the floor

D．I failed an important test

新加坡发展经济的有利条件及原因为：[ ]

A．农业发达，粮食生产自给有余

B．对外开放，发展出口加工工业

C．位置优越，港口优良，交通便利

D．利用劳动力资源丰富的优势，大力出口初级产品，发展对外贸易