填空题

What makes EcoNet distinctive is its (broad) (). It serves the largest number of users.

【参考答案】

breadth
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单项选择题
When the writer says it’s very real in the last paragraph (Line 2), he means ().

A．production is very important
B．selling a thing is a business
C．there are markets everywhere
D．the market is a practical thing
填空题
Choose a location where air can pass through the ventilation (通风) holes in the bottom, top and back of the unit to prevent it from (heat) ().
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