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题目内容
（国家开放大学理工英语21）
The technological advances made it possible for the middle classes to enjoy what had once been ________ only to the very rich.
单选题 (10 分) 10分
A.
manageable
B.
measurable
C.
affordable
单选题 (10 分) 10分
A.
manageable
B.
measurable
C.
affordable
参考答案
