单项选择题

What does the last paragraph tell us

A．Andy Williams' parents’divorce has some negative effects on him.
B．Andy Williams was rather popular because he used to be quite friendly.
C．Anti-bullying policies are adopted by all schools in Colorado.
D．Silence is strongly banned in schools.

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单项选择题

The passage focuses on ______.

A．dincosaur’s geographical location
B．shifting views of dinosaurs
C．migration patterns of dinosaurs
D．geologic activity of Earth

单项选择题

Which of the following statements can be inferred from the passage

A．Forests could not function without the fig wasp.
B．Forest will recover no matter what we do to them.
C．If man does not acquire an understanding of his relationship to the forest and other habitats there will be an ecological disaster.
D．Scientists' long-term contribution to the quality of life depends on their fig wasp research.