单项选择题
- A．Why species don’t avoid extinction by adapting.
B．Why species become extinct at the rate they do.
C．Why humans aren’t extinct.
D．How many species aren’t extinct.
点击查看答案&解析
相关考题
-
填空题
36（） -
单项选择题
A．She is writing a competitive paper for a scholarship.
B．She is doing a paper for the research demanded.
C．She missed the lecture last Friday.
D．She is planning to attend the scholarship award ceremony. -
单项选择题
A．A dentist.
B．A surgeon.
C．A physician.
D．A chemist.
