问题
单项选择题
With the development of industry, the problem of pollution was ______ from the very beginning, but no one cared about it until the late 1800s.
A．solved
B．absent
C．present
D．lacking
答案
参考答案：C
解析：[分析] 结构识别 此处考生需鉴别此句是系表结构、被动语态还是过去进行时的用法；此句意为：随着工业的发展，污染的问题从一开始就显现了；但是直到19世纪末才有人开始关注它。因此答案为C。