题干

Because of _______ high demand for Type O blood, _______ supplies of it available in blood banks are usually limited.

A:a; the

B:the; the

C:/; the

D:/; /

上一题 下一题 0.0难度 选择题 更新时间:2019-12-23 08:49:35

答案(点此获取答案解析)

A