四級考試專項練習題：完形填空（一） 四級考試專項練習題：完形填空（一）

In a telephone survey of more than 2，000 adults，21% said they believed the sun revolved (旋轉(zhuǎn))around the earth. An 71 7% did not know which revolved around 72. I have no doubt that 73 all of these people were 74 in school that the earth revolves around the sun; 75 may even have written it 76 at test. But they never 77 their incorrect mental models of planetary (行星的) 78 because their every day observations