实现世界的永久和平，是（）。
A、不可能真正做到的
B、各国对外政策所要达到的共同目标
C、人类长期以来的愿望和努力
D、当代可以做到的
参考答案：C
— ______?
—She is medium height. She has long black hair and two big eyes. She looks
very beautiful. [ ]
A. How old is your favorite singer
B. Where is your favorite singer
C. Does your favorite singer have black hair
D. What does your favorite singer look like
关于矫形器使用，正确的是（）
A.矫形器需要初检和终检
B.矫形器制作好后就可交给患者使用
C.矫形器只能短期使用
D.使用矫形器没有副作用
E.穿戴矫形器后不需要进行功能训练
