题目内容

With the changes in the world’s ______, dinosaurs died, but many smaller animals lived on.It was the survival of the fittest.(2.0)

A. weather
B. whether
C. case
D. climate

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You have done your best; I have nothing to ______.(2.0)

A. crisis
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C. critical
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Waiter:After the main course, do you want some ______?(2.0)

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A. The mixing together of certain chemicals
B. Whenever certain chemicals are mixed together
Certain chemicals mixed together
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With the changes in the world’s ______, dinosaurs died, but many smaller animals lived on.It was the survival of the fittest.(2.0)

A. weather B. whether C. case D. climate

You have done your best; I have nothing to ______.(2.0)

Waiter:After the main course, do you want some ______?(2.0)

And day after day, the once beautiful moat has turned into a ______ dustbin.(2.0)

______, heat is produced.(2.0)

A. weather
B. whether
C. case
D. climate