课时跟踪检测(二十二) 生物的进化.doc
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1、pt_. A. childrens booksB. travel guidesC. magazines( )74. _lost the white cat. A. CathyB. The assistantC. Carrie( )75. The assistant has lunch at the restaurant, she should_. A. pay nothing B. call 4323577C. work on Monday ( D )Potatoes are very popular today. But in the past this was not true. Pota
2、toes grew in South America 5,000 years ago. But they only became popular in other places 200 years ago.In the 16th century, the Spanish took the potato from South America to Europe. But the people didnt like this strange vegetable. Some people thought that their skins would look like the skin of the
3、 plant if they ate the potato. So they only ate the leaves. This made them sick because there is poison (毒药) in the leaves.In the 1800s, people started to eat potatoes. Potatoes became the main food in Ireland. Then something unlucky happened. In 1845, a disease killed all the potatoes in Ireland. T
4、wo million people died of hunger.Today each country has its potato dish. Germans eat potato salad, and the USA has the baked potato. Of course, the French invented French fries.Fill in the blanks according to the passage. Only one word for each blank.Potatoes were(76)_in South America 5,000 years ag
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