吸食、注射毒品严重破坏人体的生理机能和免疫机能，引起各种并发症，最终导致（）。
A、昏睡
B、毒瘾发作
C、吸毒死亡
参考答案：C
解方程：（1）x2+2x-4=0 （2）x（2x-1）=3（1-2x）
When I entered Berkeley, I hoped to earn a scholarship... The last hurdle (障碍) was the final.
No matter what grade I got, it wouldn ' t cancel three C-pluses. I might as well kiss the goodbye. [ ]
A. scholarship
B. course
C. degree
D. subject
