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托福寫作常見語法錯誤：智慧城市的崛起_第2頁

中華考試網(wǎng) 2016-10-20 【大中小】

　　答案：

　　When smart traffic lights are set up and traffic management software is installed, the number of green lights on each street has been optimized to avoid traffic congestion as well as to allow ambulances to reach incidents without any delay.

　　* software (不可數(shù)名詞)軟件;托福寫作常用不可數(shù)名詞，還有：education, transportation, equipment, evidence, globalization, feedback, homework, advice, information等。

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