甲状旁腺代偿机能增强出现于（）
A.高血钙时
B.佝偻病活动期
C.佝偻病后遗症期
D.维生素D缺乏性手足搐搦症
E.维生素D中毒时
参考答案：B
The _____of the dialogue than China and Vietnam, the Philippines make is to solve the south
China sea issue. [ ]
A. topic
B. theme
C. cotent
D. argument
Of all subjects, English is __________ in our class.[ ]
A. popular
B. much popular
C. more popular
D. the most popular
