初产妇，妊娠35周，有规律宫缩。宜给予何种治疗（）
A.哌替啶
B.地塞米松
C.吸氧
D.会阴侧切术
E.左侧卧位
参考答案：A
角膜直径大于多少为异常（）
A.10mm
B.13mm
C.11mm
D.12mm
E.14mm
My brother likes action movies _____ he doesn't like documentaries.[ ]
A. and
B. but
C. or
D. so
