Your parents have given you all the facts _____ you can judge for yourself easily

A．even if

B．as if

C．such that

D．so that

钩虫病贫血的主要原因是（）

A.慢性失血

B.钩虫感染引起骨髓造血功能减退

C.铁剂吸收不良

D.钩虫引起胃肠功能紊乱

E.肠道吸收障碍引起叶酸缺乏