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?

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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?
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?

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?
1、improving the technology.(提高科技水平)
2、studying.(研究)
3、training men for profession.(培养人才)