Nearly 90 percent of the young people in our country use the Internet, but about half of them use them every day. They visit chat rooms and sending e-mails. More and more scientists has begun to wonder: Is the Internet good or bad for kid? Some of them think what it is impossible to answer that question because the Internet has so much things. What’s more, recently studies show the online world can be helpful at some ways and dangerous as well. It can be both an educational resource and hiding place for bad people.

使用肾上腺皮质激素后的停药反应表现为（）

A、可引起肾上腺皮质萎缩和机能不全

B、促进生长发育

C、加强感染

D、促进食欲

E、加快伤口愈合