Li Ming is in front _________ the tree.[ ]
A. to
B. of
C. for
D. in
答案：B
The mother walked into the room in order not to wake up her baby.[ ]
A. quickly
B. quietly
C. heavily
D. fast
迟发性过敏反应常提示
A．中性粒细胞缺陷
B．补体缺陷
C．巨噬细胞缺陷
D．T淋巴细胞缺陷
E．B淋巴细胞缺陷
