A-A+
A．Because every species become extinct.B．Becau
问题详情
A．Because every species become extinct.
B．Because human beings are powerful enough to kill other species.
C．Because of over-population.
D．Because human being is still a young species though it is exploiting the environment.
参考答案
正确答案：D
解析：推理判断题。题目问为什么教授无法确定人类是否永远不会灭绝。根据对话中男士所说的 No, because we may be in a crash course to extinction by our continuous exploitation of the environment. We are a relatively young species and our time is not yet overdue可知，教授认为人类目前对环境的持续开发利用可能会导致人类的灭绝，但由于人类还是相对年轻的物
