单项选择题

The author would like to see ______.

A．more buildings erected in the forests
B．fig trees planted in all forests
C．scientific efforts diverted to bomb making
D．the preservation of as many diverse species as possible

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热门试题

单项选择题

The author is primarily concerned with describing ______.

A．research into tropical-forest biology on Barro Colorado Island
B．how the whole ecosystems can depend on the survival of a single species
C．the life cycle of the fig wasp
D．the importance of forests to the human race

单项选择题

How do you understand the word mayhem in Paragraph 1

A．Firing.
B．Bombing.
C．Disaster.
D．Violent disorder.