子宫内膜异位症的临床特点哪项是正确的()
A.多发生于40~50岁
B.病灶局限在生殖系统
C.不影响受孕
D.继发性和渐进性加重的痛经
E.疼痛发生在月经第1~2天
参考答案:D
下列可作为缺铁性贫血病因存在是
A.溃疡病
B.心功能不全
C.钩虫病
D.慢性腹泻
E.萎缩性胃炎
The document film ______ next week aims at introducing local cultures to the world.
A.released
B.being released
C.to be released
D.having been released