单项选择题

What is the main topic of this passage

A．The gathering of a film club.
B．The study of the elements of a petroleum-free community.
C．The division of labour among the members of a community.
D．The research program of alternate energy sources.

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单项选择题

Which of the following is true of the shelter group

A．It will produce housing material.
B．It will calculate the number of people in need of land.
C．It will develop alternate fanning styles.
D．It may build shared-housing communities.

单项选择题

What is Bertrand Russell's third passion

A．The suffering of mankind.
B．The ecstasy from love.
C．The relief from loneliness.
D．The sympathy for the suffering peopl