单项选择题

Food packages, bottles and tins for drinks can cause ______.

A．air pllution
B．both the litter problem and waste of resources
C．excess consumption
D．unnecessary buying
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单项选择题
In the writer; s view, the more new goods there are, ______.
A．the less pollution we have
B．the harder pollution can be done away with
C．the more pollution there will be
D．the more easily pollution can be controlled
单项选择题
The main cause of pollution is ______.
A．the production of new industrial goods
B．increased amounts of natural substance
C．our ever-increasing population
D．the release of artificial of natural substances into the environment
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