“三北”防护林所起的主要环保功效是

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“三北”防护林所起的主要环保功效是

A：吸烟除尘

B：美化环境

C：防风固沙

D：净化空气

上一题下一题 0.0难度选择题更新时间:2019-02-05 06:46:18

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C

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The Spring Festival is coming soon. Do you want to have a trip during the Spring Festival? What about going to Beijing and Shanghai? They are big cities with a long history. You can also visit many famous places. Now Shunfeng Club, a travel agency(旅行社), has some tour groups for you this year. You can know more about the tour groups for Beijing by 0312－2345867, and the tour groups for Shanghai by 0311－5368745.

Tours for	Tour group's name	The number of people	Price(yuan/days) for each person
Beijing	Beijing Ⅰ	15	1 500/4
Beijing	Beijing Ⅱ	10	1 800/6
Shanghai	Shanghai Ⅰ	20	2 500/6
Shanghai	Shanghai Ⅱ	15	3 500/8

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