填空题

To space biologists, the tropics are either cradles of diversity or ______.

【参考答案】

museums of diversity
<上一题 目录 下一题>
热门 试题

填空题
New insights into the origin of species suggest that biologists disagree less than they thought they did.
问答题
电子课件在课堂教学中的应用非常广泛2．引起这种趋势的原冈及其影响3．我们应该如何应用 Application of Course-ware as a Reform in Class Teaching
相关试题