单项选择题

A．Ozone is an extremely inactive gas.
B．Ozone only exists in the upper atmosphere.
C．Ground-level ozone is closely related to people’s health.
D．Children breathe more air per pound of body weight than adults.
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单项选择题
A．Ask for some pills to stop it.B．Punish children for their misconduct.C．See the doctor first.D．Dry the beddings as soon as possible.
A．Ask for some pills to stop it.
B．Punish children for their misconduct.
C．See the doctor first.
D．Dry the beddings as soon as possible.
单项选择题
A．The woman should ask her parents for more money.B．The woman can live with ~100 for the rest days.C．The woman should buy the painting at once.D．The woman should not buy the painting.
A．The woman should ask her parents for more money.
B．The woman can live with ~100 for the rest days.
C．The woman should buy the painting at once.
D．The woman should not buy the painting.
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