It has taken Jeremy Lin, a Harvard-educated Taiwanese-American, less than a week to become the

latest international         in the NBA,USA.[ ]

A. brand

B. phenomenon

C. appreciation

D. centre

防止蛇毒扩散初期的首要方法为（）。

A.早期环扎

B.伤肢放低

C.从伤口抽吸毒液

D.清洗伤口

E.转上级医院