以下提供若干个案例，每个案例下设若干道考题。请根案例所提供的信息，在每一道考题下面的A、B、C、D、E五个备选答案中选择一个最佳答案。

青年男性患者，腰痛、腰僵硬，逐渐出现驼背，X线片见骶髂关节模糊，间隙消失，可能诊断是

A．慢性腰扭伤

B．腰肌劳损

C．腰椎结核

D．腰间盘突出症

E．强直性脊柱炎

The book, which is a useful guide for today's young people, deals with many questions and problems that face them at school and at home as well as in society.

A．are faced

B．confront

C．in opposition

D．meet.