46. What is a reason for the author to be in the habit of saying "busy"

　　45 A number of existing farming technologies could be used to reduce the negative effect of climate change

来源 : 新东方在线 2025-04-18 16:42:59 关键字 :

　　44 Poor people may have to give up eating certain foods because of their high prices 　　答案&解析　　44 答案

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　　43 It remains unsettled whether the global food supply problem can be solved by creating heat-tolerant crops

来源 : 新东方在线 2025-04-18 16:41:43 关键字 :

　　42 One possible solution to the food security problem is diversification of diet 　　答案&解析　　42 答案解析L。

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　　41 Although farms in the US can move a bit northward, crop yields may decrease 　　答案&解析　　41 答案解析F。

来源 : 新东方在线 2025-04-18 16:40:11 关键字 :