单项选择题


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

A．They should not share the same space.
B．They should avoid touching each other.
C．They’d better have an injection for prevention.
D．They should wear the masks.
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单项选择题
A．He has not been to the new restaurant yet.B．He would like to go to the new restaurant with the woman.C．The food at the new restaurant is not very good.D．The restaurant’s atmosphere is very important to him.
A．He has not been to the new restaurant yet.
B．He would like to go to the new restaurant with the woman.
C．The food at the new restaurant is not very good.
D．The restaurant’s atmosphere is very important to him.
单项选择题
Why is Coordinated Universal Time mostly used at the North Pole
A．Because it is more precise than Green Mean Time.
B．Because it is preferred by astronomers and navigators.
C．Because it is similar to Greenwich Mean Time.
D．Because it is technically based on time zone.
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