many people first go to the Internet for information it is not always the best place for

问题补充：

many people first go to the Internet for information, it is not always the best place for what you need.

A. As

B. Since

C. When

D. While

答案：

A. As

B. Since

C. When

(答案→)D. While

解析：考查连词。A. 由于，B. 自从……以来C. 当……时，考虑到D. 虽然，当……时。句意：虽然人们首先是上网查信息，但这并不总是找你需要的东西的好地方。故选D。