A-A+
If nothing is done to protect the environment
问题详情
If nothing is done to protect the environment, millions of species that are alive today will have become______.
A．deteriorated
B．degenerated
C．suppressed
D．extinct请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
解析：题意是：如果不采取任何措施来保护环境，数百万种今天尚存的物种将会______。[D]extinct“灭种的”，符合题意。[A]deteriorated“恶化，降低”，[B]degenerated“堕落，退步”，[C]suppressed“镇压”都与题意不符。
