单项选择题

A．Someone spilled water on it.
B．Someone lost it.
C．It was made of low quality metal.
D．The standard for measuring had changed.
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单项选择题
A．A third.B．Less than three-fifths.C．Almost half.D．More than three-fifths.
A．A third.
B．Less than three-fifths.
C．Almost half.
D．More than three-fifths.
单项选择题
A．Clay tiles.B．Slate or stone.C．Wooden shingles.D．Reeds or straw.
A．Clay tiles.
B．Slate or stone.
C．Wooden shingles.
D．Reeds or straw.
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