A-A+
Surface water was sampled bi-monthly over a on
问题详情
Surface water was sampled bi-monthly over a one-year period at seven sites ______evenly over the area.
A．disperse
B．dispersal
C．dispersed
D．dispersion
参考答案
正确答案：C
解析：evenly over the area是修饰前面seven sites的形容词性短语。因此空格内应该填人一个分词，(C)最为合适。由此可见在这种情况下分词前面<主格关系代词+be动词>可以省略。
