题目内容
（请给出正确答案）
[主观题]
The most important economic activity in Canada is ______.A．miningB．fishingC．farmingD．manuf
The most important economic activity in Canada is ______.
A．mining
B．fishing
C．farming
D．manufacturing
如搜索结果不匹配，请 联系老师 获取答案
慢性失血时成人缺铁性贫血最常见和最重要的病因。()
