【简答题】完形填空。 Brandon Keefe was in the third grade when he decided to make a difference. One afternoon at a parent-teacher meeting to 1 building a library for a children's home, Brandon heard 2 difficult it w...
【单选题】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 cor...
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.