单项选择题

A．An unhealthy diet.
B．Irregular periods of sleep.
C．Sitting too long surfing the Internet.
D．Using good monitors.
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单项选择题
A．The manufacturer.B．The item of product.C．The selling date.D．The price.
A．The manufacturer.
B．The item of product.
C．The selling date.
D．The price.
单项选择题
A．They’re happy Maria’s playing it again.B．They are both very tired of it.C．The man likes to listen to it often.D．The woman has never heard it before.
A．They’re happy Maria’s playing it again.
B．They are both very tired of it.
C．The man likes to listen to it often.
D．The woman has never heard it before.
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