预防子宫内膜异位症的发生错误的是()
A.经期可做妇科检查
B.人流吸宫时,防止负压突然降低
C.剖宫产时注意保护腹壁切口
D.及时处理宫颈粘连
E.口服避孕药避孕
参考答案:A
There were no roads accessible to the earthquaks—stricken town and food_________had to be dropped by parachute.
A.chains
B.resources
C.supplies
D.feasts
把一根长5米的彩带平均剪成4段.每段长______米,每段占全长的______.