单项选择题

The main idea of the passage is that______.

A．new approaches are found to solve the garbage problem
B．garbage disposal becomes a growing problem with limited solutions
C．garbage pollution is becoming more and more serious
D．recycling is an effective way to handle the waste

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单项选择题

How was garbage usually disposed of during the eighteenth century

A．All the garbage was burned.
B．All the garbage was thrown into the river directly.
C．Most of garbage was recycled.
D．Garbage was transported to a remote dumpsite.