单项选择题

What's the main reason for big cities to build their own recycling plants

A．To deal with wastes in a better way.
B．To protect the environment from pollution.
C．To get raw materials locally.
D．To get big profits from those plants.

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单项选择题

The passage is mainly about ______.

A．a cheap way to get energy
B．the location of recycling plants
C．new ways of recycling wastes
D．the protection of city environment

单项选择题

The phrase be well on with ( Line 1, Para. 1 ) most probably means ______.

A．"have completed what was started"
B．"got ready to start"
C．"have achieved a great deal in"
D．"put an end to"