英语四级听力：概括、抽象保留原则

　　当选项中出现比较概括、抽象的句子时，这时我们就要把表述事实的、具体的句子划掉，而去选择表概、抽象、比较性的句子!此原则可衍生出一个包含取大的原则，在作题时应用也是十分的广泛，一般当两个选项的意思接近时，表述比较全面的一般为正确选项!

　　典型例题：

　　7. A) The visiting economist has given several lectures。

　　B) The guest lecturer’s opinion is different from Dr. Johnson’s。 C) Dr. Johnson and the guest speaker were schoolmates。 D) Dr. Johnson invited the economist to visit their college

　　例题分析：A、C、D均为表述事实的句子，只有B项为对比、比较的句子，较之A、C、D项更为抽象的表述了一件事情，所以B项为正确选项! 本题听力原文：

　　7. M: The visiting economist is speaking tonight, but Dr. Johnson doesn’t seem to think much of him。

　　W: That’s because Dr. Johnson comes from an entirely different school of thought。 Q: What do we learn from the woman’s remark