大吞噬细胞是指（）
A.中性粒细胞
B.T淋巴细胞
C.B淋巴细胞
D.单核－巨噬细胞
E.淋巴细胞
参考答案：D
慢性羊水过多临床表现为（）
A.多发生在妊娠20～24周
B.自觉症状严重
C.常并发胎盘早剥
D.破膜后易发生脐带脱垂
E.胎儿畸形多见，无脑儿居多
_____ the teachers in their school is about 200 and one fourth of them are ____ teachers.
A．A number of, women.
B．A number of , woman
C．The number of , women.
D．The number of , woman
