A、International trade. B、The increase of agricultural exports. C、Measure of government toward farming. D、Making money. D美国青年农民首要

(16) A new report offers information about American farmers. It gives the opinions of young American farmers.
The second report comes from the American Farm Bureau Federation, the nation’s largest farm group. (17) It questioned about 300 farmers between the ages of 18 and 35 from across the country.
(18) This report found that the leading concern of young farmers was earning a profit. It was the fourth time in four years that those questioned said making a profit was their top concern. For the fifth year, the young farmers said international trade was important for making a profit. Many of them said increasing agricultural exports was the most important step the United States government could take to help farmers.
The young farmers were divided on a question that dealt with future earnings from agriculture. A little more than half said their farm earnings should come totally from selling their crops. The others said farmers also need payments from government programs. 51% of those questioned said they started farming as a member of a family business. (19) 27% entered farming on their own. Almost 14% said marriage led them to farming. On a separate issue, almost 72% of the farmers said they or their husband or wife have an additional job not connected with farming. (19) 59% of the young American farmers said they are more hopeful about farming now than they were five years ago. More than 90% said they believe they will remain in farming all their lives. And, almost 85% would like to see their children become farmers.
Questions 16 to 19 are based on the passage you have just heard.
16. What’s the main idea of this passage?
17. What age range did the survey cover?
18. What is the leading concern of those farmers?
19. What is NOT true according to the passage?