黄河流域农耕时代的原始居民是

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黄河流域农耕时代的原始居民是（）

A：北京人

B：半坡人

C：河姆渡人

D：蓝田人

上一题下一题 0.0难度选择题更新时间:2019-04-17 01:09:10

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B

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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

选项	事实	解释
A	食盐是咸的，白糖是甜的	不同种物质的性质不同
B	CO₂和N₂都能使燃着的木条熄灭	一般都不支持燃烧
C	将墨汁滴入一杯清水中，清水很快变黑	分子在不断运动
D	25m³的氧气可以装入0.024m³的钢瓶中	氧分子的体积变小

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