问题描述：
四．阅读理解 (根据文章内容判断正误:T or F)
The best-known vegetable in the world is the potato.It grows in many places and does not need as rich soil as many other crops need.But until four hundred years ago the potato was not known to Europeans.But today it is one of the main foods in Europe.About a half of the world's potatoes are grown in Europe….
In France the potato was not grown for food for a long time.A story is told about Houis.In 1778 he saw some potato flowers for the first time.He liked them so much that he picked one and put it in his buttonhole（纽扣孔）.He was interested in the flowers,not the potatoes themselves.By the beginning of the last century,the potato was eaten in almost all the countries of the world.
（ ）1.The potato is only one of the well-known vegetables in the world.
（ ）2.Potatoes can be grown more easily than other crops.
（ ）3.Potatoes were grown for food in France in 1778.
（ ）4.One-second（二分之一）of the world's potatoes are grown in Europe.
（ ）5.The potato was eaten in nearly all parts of the world.
The best-known vegetable in the world is the potato.It grows in many places and does not need as rich soil as many other crops need.But until four hundred years ago the potato was not known to Europeans.But today it is one of the main foods in Europe.About a half of the world's potatoes are grown in Europe….
In France the potato was not grown for food for a long time.A story is told about Houis.In 1778 he saw some potato flowers for the first time.He liked them so much that he picked one and put it in his buttonhole（纽扣孔）.He was interested in the flowers,not the potatoes themselves.By the beginning of the last century,the potato was eaten in almost all the countries of the world.
（ ）1.The potato is only one of the well-known vegetables in the world.
（ ）2.Potatoes can be grown more easily than other crops.
（ ）3.Potatoes were grown for food in France in 1778.
（ ）4.One-second（二分之一）of the world's potatoes are grown in Europe.
（ ）5.The potato was eaten in nearly all parts of the world.
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