单项选择题

Today, housework has been made much easier by electrical ______.

A．appliances
B．facilities
C．instruments
D．equipments
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单项选择题
Cigarette smoking is a major health ______ and may result in your death.
A．hazard
B．fault
C．mistake
D．shortcoming
单项选择题
The new policy has ______ a large amount of investment for industry and business in this city.
A．acquainted
B．adhered
C．activated
D．asserted
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