单项选择题

How was the weight used

A．To check the accuracy of scales.
B．To calculate the density of other metals.
C．To observe changes in the atmosphere.
D．To measure amounts of rainfall.

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单项选择题

Why are the dances approved by the elders of the tribes

A．The elders must give approval to perform sacred dances.
B．The elders make sure the dances are performed properly.
C．The troupe is financed by the elders.
D．The elders have substantial acting experience.

单项选择题

What is the purpose of the interview

A．To broadcast an awards ceremony.
B．To announce a meeting of tribal theater.
C．To celebrate the opening of a new theater.
D．To inform people about a performance.