For two individuals who engage in the same two productive activities, it is impossible for one of the two individuals to ( )
A: have a comparative advantage in both activities.
B: have an absolute advantage in both activities.
C: be more productive per unit of time in both activities.
D: gain from trade with each other.
A: have a comparative advantage in both activities.
B: have an absolute advantage in both activities.
C: be more productive per unit of time in both activities.
D: gain from trade with each other.
举一反三
- Christmas celebration includes the activities __________. A: on Christmas eve B: on Christmas day C: on both Christmas eve and Christmas day D: for two weeks
- John and I have just been telling stories two of us. A: ourselves B: to each other C: each of us D: both
- Cotransformation between two genes is more likely if they are: A: close to one another. B: far apart from one another. C: both next to the F factor. D: both oriented in the same direction.
- They have two teams, and ______ have a good chance of winning. A: all B: either C: both D: each
- We note with satisfaction that all these activities have helped to ____ mutual understanding and friendship between our two countries.