单项选择题

A．Whether second hand smoking is liked with cancer.
B．Whether active smoking is linked with cancer.
C．Whether passive smoking by children is liked with childhood cancers.
D．Whether an average degree of passive smoking is harmful.
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单项选择题
A．Because he wants to learn more about computer.B．Because he has a tight schedule.C．Because he wants to save money.D．Because he is a good friend of the woman’s.
A．Because he wants to learn more about computer.
B．Because he has a tight schedule.
C．Because he wants to save money.
D．Because he is a good friend of the woman’s.
单项选择题
A．She should stay up all night to prepare for her exam.B．She’d better have good rest instead.C．She should study in the night and have a rest in the morning before the exam.D．She should sleep early and get up in the morning to study.
A．She should stay up all night to prepare for her exam.
B．She’d better have good rest instead.
C．She should study in the night and have a rest in the morning before the exam.
D．She should sleep early and get up in the morning to study.
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