单项选择题

In the second paragraph, the underlined words "the building" most probably refer to ______.

A．an ordinary building
B．an energy-saving building
C．a green-colored building
D．a water-reducing building
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单项选择题
The main idea of the passage is that Japan ______.
A．surprises the world
B．suffers from serious air and water pollution
C．leads in exporting goods
D．leads in technology in the world today
单项选择题
The underlined word arable most nearly means ______ .
A．thickly settled
B．suitable for farming
C．fit for mining
D．unable to be improved
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