单项选择题

How does the weather affect the growth of a tree

A. Plenty of sunlight and rainfall will limit the growth of a tree.

B. A tree grows best with little sunlight and rain.

C. Some trees provide an exact record of the weather.

D. The weather determined the pattern of rings in a tree trunk.

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填空题

Night (fall) ______ , all the children playing in the park hurried home.

单项选择题

If the filth ring is far from the other rings, then it means that, five years ago,

A. the climate was good for the tree

B. plenty of sunny and rainy weather occurred

C. there was plenty of sunlight and rainfall

D. all of the above