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【单选题】
根据耶克斯-多德森定律,当学生完成较容易的作业时,教师应使其心理唤醒程度控制在()。A.
较高的水平
B.
较低的水平
C.
非常低的水平
D.
中等水平
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举一反三
【单选题】What's the nationality of those who died in a western Oklahoma accident?
A.
Canadian.
B.
American.
C.
Mexican.
【单选题】If Canadian speculators believed the Swiss franc was going to appreciate against the U.S. dollar, they would:
A.
Purchase Canadian dollars
B.
Purchase U.S. dollars
C.
Purchase Swiss francs
D.
Sell Swiss francs
【单选题】Canadian children are encouraged to learn both ______ and ______ at school.
A.
English and Spanish
B.
French and Spanish
C.
English and French
D.
Portuguese and French
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