试题正文
What do scientists believe will happen by 2050?
选择一项：
a.
450 types of plants will be in danger of becoming extinct.
b.
Part of the world's plant life will face extinction.
c.
All plant life will be altered.
d.
Environmental factors will affect only 450 plant
species.
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Ваш ответ верный.
正确答案是：Part of the world's plant life will face extinction.