单项选择题
A. ins and outs B. in a pinch C. in a cleft stick D. in a breeze
A. hinterland B. nearness to a large lake C. position in regard to transport routes D. flat terrain
A. has risen to around forty percent in the last 200 years B. will have risen to more than fifty percent by the year 2010 C. has risen by forty-five percent since 1800 D. will live in cities for the first time