It rains very heavily in this area, which has annual rainfall of 7,000 mm,
ideal environment for forests.
A. the; an
B. an; 不填
C. an; an
D. 不填; the
网友回答
A. the; an
B. an; 不填
(答案→)C. an; an
D. 不填; the
解析:考查冠词。根据语境可知句子译文如下:这个地区雨下的非常大,年降水量(an annual rainfall)达7,000毫米,适于森林的一种理想环境(an ideal environment)。再结合所学知识:rainfall此处作为可数名词,属于泛指;第二空也属于泛指:一种环境。