题目内容
The information of the global climate conditions in the past can be obtained(获得)through _________.
[ ]
A.
separating carbon dioxide from the air
B.
examining the growth ringsof trees
C.
comparing temperatures in different areas
D.
studying the ice and air caught in each layer
答案:D
解析:
解析:
|
这是一道细节推断题。根据第三段“And the ice and air caught in each layer have begun to answer questions about the climates in the past.”可判断出对沉积在各层的雪和对空气的研究可知道过去气候的状况。 |
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