Earth’s animals are disappearing faster than they reproduce. Bec

Earth’s animals are disappearing faster than they reproduce. Because there is too __61__ research and too much ignorance, __62__ is aware of how much we are losing.Many different kinds of plants and animals _63__ extinct. Every year, 0.5 percent of the __64__ things in the tropical rain forests become extinct. Some disappear __65__ they are found and named. No one has time __66__them before they are gone.

A.study

B.to study

C.studying

D.studied

正确答案是B