题目内容
20．The Jiangbei New District has an area of 2400squarekilometers（公里）．分析 江北新区面积是2400平方公里．
解答 答案：kilometers．
根据所给汉语提示结合语境推测句意是"江北新区面积是2400平方公里．"，此处根据设空处前面的2400square判断应该填名词复数，"公里"的英文单词是kilometer，所以答案是：kilometers
点评 做这类题型，首先根据所给汉语明确句子所要考查的单词或短语的拼写，再结合相关语法知识对单词或短语做出形式上的变化．
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