单项选择题

Questions 16 to 20 are based on the following talk.

A．To explain how one state strengthened its land claims.
B．To criticize an effort to acquire additional resources.
C．To show that many explorers searched for new lands.
D．To question the validity of Virginia"s claims.
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单项选择题
A．They would help the crew to get out of the desert.B．They would help the crew to have radio contact.C．They would help people to identify them.D．They would help the engineers to know what had befallen them.
A．They would help the crew to get out of the desert.
B．They would help the crew to have radio contact.
C．They would help people to identify them.
D．They would help the engineers to know what had befallen them.
填空题
numbers and varieties
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