单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．Establish personal contracts.
B．Further personal contacts.
C．Investigate personal contracts.
D．Sell medical facilities.
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单项选择题
A． Golden Gate is the name given to a bridge and a boat sailing under the bridge.B．Commuters prefer high-speed boats but tourists are attracted to more leisurely ones.C．People have to cross the Golden Gate Bridge by car to get to work.D．Wedding ceremonies are occasionally held on the boat.
A．"Golden Gate" is the name given to a bridge and a boat sailing under the bridge.
B．Commuters prefer high-speed boats but tourists are attracted to more leisurely ones.
C．People have to cross the Golden Gate Bridge by car to get to work.
D．Wedding ceremonies are occasionally held on the boat.
单项选择题
A．Because we want to make others laugh, too.B．Because we want to appear optimistic in public.C．Because a fake smile or laugh will change into a true laugh.D．Because our bodies can be fooled easily by all act of laughing.
A．Because we want to make others laugh, too.
B．Because we want to appear optimistic in public.
C．Because a fake smile or laugh will change into a true laugh.
D．Because our bodies can be fooled easily by all act of laughing.
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