The word "Also"(Line 2, Para. 2) is used to ______.
A. continue the discussion of total U.S. electricity use
B. expand the topic of reduction of energy and water use
C. include the discussion of public transportation
D. shift the focus to the topic of the environment protection
查看答案
When a spider is removed to a new position where half of a net has been made, it will probably
A. begin a completely net.
B. destroy the half-made net.
C. spin the rest of the net.
D. stay away from the net.
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