获得性红细胞膜缺陷()。
A.遗传性红细胞膜缺陷
B.遗传性红细胞酶缺乏
C.阵发性睡眠性血红蛋白尿
D.免疫性贫血
E.溶血性尿毒症综合征的贫血
参考答案:C
He really likes English and often ______ English after class.
A.practice speak
B.practices speak
C.practices speaking
D.practice speaking
氨气和氯气可以混装和混储。