Germans eat potato salad, the United States has the baked potato, and the French invented French fries. 16. Which statement is true?

A. Potatoes are only popular in France.

B. Potatoes are not very popular today.

C. Potatoes are the most important crop in the world.

D. Potatoes were not very popular in the past.

17. In the 1500s, people in Europe ________.

A. found gold and potatoes from Peru

B. found potatoes could harm people's skin

C. found potatoes were strange vegetables

D. found potatoes and invented French fries

18. Only in about 1780 did people start to ________.

A. grow potatoes for their flowers

B. go to Peru to look for gold

C. eat potatoes in Ireland

D. eat eight to ten pounds of potatoes a day

19. What is one of the advantages of potatoes?

A. They grow well in cold and dry weather.

B. They have higher productivity compared with others.

C. They can be grown with other plants.

D. They can be eaten along with milk or cheese.

20. What statement best illustrates the main idea of the passage?

A. How potatoes become popular.

B. Why potatoes are a good vegetable.

C. Why potatoes are healthy and tasty.

D. How potatoes have been consumed