由各部、委以上单位或我驻外使、领馆提出要求按()接待的客人属于要客范围。
A.重要旅客
B.团队旅客
C.散客
D.5人以上
参考答案:A
---- How long was it ______ you finally reached your goal of becoming a doctor?
---- Five years.
A.before
B.since
C.when
D.until
溶剂法制备固体分散体适用于()、()的药物和载体。