In one day, Brandon can either plow 10 acres or plant 20 acres. In one day, Christopher can either plow 14 acres or plant 14 acres. Brandon and Christopher can
A: gain from exchange if Brandon specializes in planting and Christopher specializes in plowing.
B: gain from exchange if Brandon specializes in plowing and Christopher specializes in planting.
C: exchange, but only Brandon will gain from the exchange.
D: exchange, but only Christopher will gain from the exchange.
A: gain from exchange if Brandon specializes in planting and Christopher specializes in plowing.
B: gain from exchange if Brandon specializes in plowing and Christopher specializes in planting.
C: exchange, but only Brandon will gain from the exchange.
D: exchange, but only Christopher will gain from the exchange.
举一反三
- In one day, Brandon can either plow 10 acres or plant 20 acres. In one day, Christopher can either plow 14 acres or plant 14 acres. Which of the following statements about comparative advantage is correct A: Brandon has a comparative advantage in both plowing and planting. B: Brandon has a comparative advantage only in plowing. C: Brandon has a comparative advantage only in planting. D: Christopher has a comparative advantage in both plowing and planting.
- From the first paragraph we can learn that Christopher was __________.
- From the last two paragraphs we can conclude that ______. A: exchange students are welcome in America B: exchange students must pay much money to the host families C: American students don't want to join the exchange programs D: old Americans can benefit from hosting exchange students
- How can you gain valuable on-the-job experience? A: Through observation B: Through exchange information C: Through an internship D: Through travel
- Exchange rates are the prices of buying，selling or converting money from one currency to another.（ ）