题目内容
18.Search engines consist of 3main parts.分析 搜索引擎由三个主要部分组成.
解答 答案:consist 考查首字母填空.根据句子结构,要填动词,因主语search engines是复数形式,本句指的是一般事实,时态要用一般现在时态.谓语动词在一般现在时态中用动词原形,结合句意,应是consist,consist of意为"由…组成".故答案是consist.
点评 对于首字母填空题,准确地翻译句子、理解句子,然后根据句意及提示完成句子,使句意更通顺.
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