单项选择题

The main purpose of the research is________.

A．to make preparations for a new publication
B．to learn how couples spend their weekends
C．to know how housework is shared
D．to investigate what people do at the weekend
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单项选择题
They claimed that they did not arrange the demonstration. It was absolutely _______.
A．spontaneous
B．simultaneous
C．synthetic
D．substantial
单项选择题
According to the passage,who is afraid of being heard while talking on the mobile
A．Talkers.
B．The "speakeasy".
C．The "spacemaker".
D．Texters.
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