单项选择题

The word "Also" (Line 2,Para. 2 )is used to ______.

A．continue the discussion of total U. S. electricity use
B．shift the focus to the topic of the environment protection
C．include the discussion of public transportation
D．expand the topic of the reduction of energy and water use

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单项选择题

What do green buildings refer to nowadays

A．Buildings that are environment-friendly.
B．Buildings covered with green plants.
C．Buildings painted by green hands.
D．Buildings like houses, factories, and offices.

单项选择题

What did Marry Dettling mean when she said It's going to be big

A．Green buildings will be larger in size.
B．People expect bigger green buildings.
C．Green buildings have a great potential.
D．People prefer to live in bigger buildings.