A-A+
It can be inferred from the passage that studi
问题详情
It can be inferred from the passage that studies of endangered species ______.
A．have revealed little of importance to improve wildlife preservation
B．are more likely to be carried out when a financially concerned interest group is involved
C．sometimes endanger the very species they hope to protect
D．show that endangered species can never be saved except at great cost
参考答案
正确答案：B
解析：文章最后一句表明由于商业或捕猎的原因，这些地方的某些物种即全部灭绝，在其它地方情况则会好一些，这种对比表明这些研究要不是对一部分人有收益，就不会展开。
