题目内容
17.I developed very slowly and it took nearly two hundred yearsbefore I was built as an analytical machine.分析 我发展得很慢,花了将近两百年的时间我才被建成一台分析机.
解答 答案:before 考查单词填空.连词before意为"…才".
点评 考查单词填空,准确地理解题意、然后根据题意及提示确定所填单词形式,正确写出单词完成答题.
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