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  3. The high prices for corn--while driving hunger in Africa--have encouraged oth...

The high prices for corn--while driving hunger in Africa--have encouraged oth...

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问题 The high prices for corn--while driving hunger in Africa--have encouraged other farmers to__________land from wheat, soybeans, or even pasture to corn production.
选项 A．turn over
B．turn on
C．turn up
D．turn around
答案A
解析考查动词短语辨析。turn around表示“回转，转向，转身，扭转”，turn over表示“(底朝上的)翻转，旋转，思考，移交等”，此处指“翻地”，turn on表示“开启，变得兴奋，突然装出，开始”。turn up表示“找到，出现．突然发生”。句意为“高涨的玉米价格在催生非洲的饥荒的同时，促使更多农场主在自己原本种植小麦、大豆甚至牧草的土地上种玉米”．故选A．
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