The richness of its soils has helped make ______ the most populo

The richness of its soils has helped make ______ the most populous in Canada and one of the country’s main agricultural regions.
A、the Canadian Shield
B、the Appalachian Region
C、the Great Lakes-St. Lawrence Lowlands
D、the Cordilleran Region
【正确答案】：C
【题目解析】：The richness of its soils has helped make the Great Lakes-St. Lawrence Lowlands the most populous in Canada and one of the country’s main agricultural regions. 参见教材P261。