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【判断题】

最后一次生物大灭绝在208百万年之前………………( )

A.
正确
B.
错误
举报
题目标签:灭绝百万万年
参考答案:
参考解析:
.
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【单选题】Many people feel that human beings are responsible for the disappearance of some other animal species. While we may have hastened the disappearance of some, abundant evidence suggests mankind has had ...

A.
Human beings have hastened the disappearance of some.
B.
There was mass extinction long before humanity's time on Earth.
C.
Human beings'activities have had great impact on the earth.
D.
Many species have extinct since the human race came into being.