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题目内容
（兰州工业学院大学英语1）
The passage states that incom available for spending in the U.S. was greater in 1955 than in 1950 . How much was it ?
A、60%
B、30%
C、33%
D、90%
A、60%
B、30%
C、33%
D、90%
参考答案
