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问题
选择题
下列生活中的变化，属于物理变化的是[ ]
A.米饭变馊
B.牛奶变酸
C.湿衣服凉干
D.钢铁生锈
答案
答案：
C
填空题
黄河上游流经我国地势第_______、______级阶梯交界地带。
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选择题
It is considered by some people that to pay to see a movie will be foolish ____ you can see it on TV for nothing.
A. where
B. when
C. however
D. that
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