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补全下列句子(用动词ing形式)
1.We can develop scientific research by?2.We can improve the rice crop yield by?3.The goverment can develop research by?
人气:132 ℃ 时间:2020-05-12 23:10:21
解答
1、improving the technology.(提高科技水平)
2、studying.(研究)
3、training men for profession.(培养人才)
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