Which of the following is not true of U.S. agriculture? A: It is the most efficient in the world. B: About a third of the world's food exports come from U.S. farms. C: The use of modern farm machinery and agricultural methods has helped make U.S. farms the most efficient in the world. D: The number of farms in the United States has increased since 1925.

Milk，butter，and cheese are（）here from the farms.

Horses and oxen have been ________ to work on farms.

Milk, butter and cheese are _______ here from the farms.

The New England colonies became a center for small farms.( )

What is the author’s opinion on the urban farms?

Small farms and the lack of modern technology have ______ agricultural production.

( ), Missouri, Iowa, Oklahoma and California have the most farms in the USA.

Uncle Li and Uncle Wang live in the low and broken houses because _( )_ . A: they hope to save money B: they're both poor C: their farms are at the foot of the mountain D: they're not far from their farms

In the city, where do people live? A: In houses and on farms B: in houses or apartments