A-A+
According to the passage a preliminary step in
问题详情
According to the passage，a preliminary step in the creation of the Canadian Wheat Board was the appointment of______.
A. the Winnipeg Grain Exchange
B. a board of supervisors
C. several producer groups
D. a new government
参考答案
正确答案：B
[解析] 见第三段第一句话。
