many trees and flowers have been planted in recent years.they will ____the beauty of the city.
问题描述：
many trees and flowers have been planted in recent years.they will ____the beauty of the city.
a.raise b.rise c.add to d.add up
可为什么不能选a和b啊
用其提高的意思不可以吗
答
add to增加城市的额美好
raise做增加是表示,增加的数量或上升,并没有增添美丽的含义
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