About four fifths of cropland is in _____.
A、southwestern British Columbia
B、southern Ontario
C、the Prairie Provinces
D、eastern coastal
【正确答案】：C
【题目解析】：
答案选C。About four fifths of this cropland is in the Prairie Provinces, but the widest range of crops and the highest yields occur in southwestern British Columbia and southern Ontario.参见教材P278。
