题目内容

14．No one believed his reason for being late ______ he was caught in a traffic jam，which made him embarrassed．（　　）
A．thatB．whyC．whereD．whether

分析 没人相信他是因为交通拥堵而迟到的理由，这让他很尴尬．

解答 答案：A  题干中he was caught in a traffic jam是解释reason的内容，是一个同位语从句；句意表达的是事实，要用that来连接．故选A．

点评 在句子中起名词作用的各种从句统称为名词性从句．根据它们在句中的语法作用，这类从句又可分为主语从句，同位语从句，表语从句和宾语从句．

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A．areB．isC．have beenD．has been
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A．handleB．solveC．followD．suffer
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Take the shopping cart as an example．Sylvan Goldman was a grocery store owner．Like most businessmen，he wished that his customers would buy more so that he could make more money．He knew山at if they could carry more goods easily as they were shopping，山en his sales would go up．While thinking about the problem one night，he had an idea．Working with a local handyman named Fred Young，he designed the first shopping cart．Today，retailers who use shopping carts sell more goods and make more profits．
Nature has also inspired inventors throughout history．This is what happened to George de Mestral one day．While hunting with his dog in the Swiss Alps，he noticed how the burs（剌球） of certain plants stuck to his clothing and to his dog's fur．After examining them under a microscope，he found they had tiny hooks that could easily stick to the fibers of clothing or animal hide．For the next ten years，George de Mestral searched for the hest way to produce his idea．The result of his original inspiration was Velcro，which is used in many modem objects，including sportswear，shoes，automobiles，and even space suits．
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