多项选择题
A.重型联合免疫缺陷病B.重型再生障碍性贫血C.重型海洋性贫血D.造血系统恶性疾病E.遗传性代谢性疾病
A.②③B.②C.④D.①⑤
A.He has never been to the laboratory.B.He wants to stop and ask for directions.C.The woman won't be late.D.The program in the laboratory has already begun.