问题
选择题
Besides wildlife on land, there are species living in the oceans _______ we still know little.
A．about which
B．in which
C．for which
D．with which
答案
答案：A
题目分析：句意：除了陆地上的野生动物，海洋中还有一些我们知之甚少的物种。这个句子中包含一个介词+关系代词引导的定语从句，know about是固定用法，意思是知道，了解，选A。