单项选择题

The lobsters move ______.

A．w the fresh water
B．to the sea floor
C．at a certain time
D．to find more food
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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
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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