72.From the example about orange in Florida and shoes in Wenzhou ,we can draw the conclusion that _____.

A. the field in Wenzhou can be improved to grow oranges .

B. Florida workers could be trained to make shoes .

C. we should fully use our absolute advantage in our advantaged field.

D. our comparative advantage is equal to our absolute one as to making fortunes .

73.Why doesn’t the capable company boss change his car oil himself ? _____

A. The mechanic is more efficient than him .

B. He needn’t do it by himself for his riches..

C. He would rather do something more valuable .

D. Changing oil is beyond his ability.

74.Which of the following is right according to paragraph 4. ? _____

A. You should use your absolute advantage in your work definitely .

B. You must work hard to improve your absolute advantage to be the best worker .

C. If other’s absolute advantage is larger , your comparative advantage is smaller .

D. Sometimes you may still use your comparative advantage to find your advantaged position .