阅读理解Eversincefarmersbegantogrowgr

阅读理解 Ever since farmers began to grow grain, they have had to protect their crops from birds. In the 1300's, English farmers hired children to protect their crops. They were called “bird scares”. The children chased birds and threw stones at them. Bird scares were replaced in the 1800's by scarecrows. A scarecrow is anything that is set in a field to scare birds away. Often it is a pole dressed like a person. Some farms with small fields still use scarecrows today. Farming became big business in the twentieth century. Scarecrows could no longer protect the huge fields of grain, so farmers used poisonous chemicals on the fields. The poison made the grain bitter. The birds usually would not eat the bitter grain. Although they can prevent crops from being destroyed by insects and birds, some chemicals can be harmful to humans. Therefore, farmers are using fewer chemicals now than they did twenty years ago. Perhaps scarecrows may be seen more often in the fields in the future.1.English farmers began to hire children to get away birds since_____.A.the twelfth centuryB.the fifteenth centuryC.the sixteenth centuryD.the fourteenth century2.“Bird scares” keep birds away from crops by_____.A.feeding them bitter grainB.pretending to be scarecrowsC.spreading chemicals in the fieldsD.chasing them and throwing stones3.Which statement from the passage supports the idea that scarecrows may be seen more often in the fields in the future?A.Scarecrows could no longer protect fields.B.They were called “bird scares”.C.English farmers hired children.D.Farmers are using fewer chemicals.4.The author's purpose is to ________.A.give information about children who worked as bird scaresB.tell how crops have been protected from birdsC.make the readers feel sorry for birds that eat poisoned grainD.entertain the readers with a funny story

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这个解释是对的