单项选择题

When is the main subject discussed in the text

A．Dealing designed the first green building in the U.S.
B．Energy shortage calls for buildings of new design.
C．Green building help save environment.
D．Green building is popular among people.

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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

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