“串珠”主要是佝偻病哪个期的表现()。
A.维生素D缺乏早期
B.活动早期(初期)
C.活动期
D.恢复期
参考答案:C
Both you and I good teachers. [ ]
A. are
B. is
C. am
D. was
社区社会保障