二十四节气被国际气象界誉为“中国第五大发明”,与之相关的谚语有很多,如“大雪河封住,冬至不行船”,人们常依据节气来安排生产活动。下图为地球公转示意图。
据此完成下列小题。
![](http://static.xuejinqu.com/qimg/675/6758ad73f088d2438cf6316d5cc56b97.png)
1.冬至时地球位于上图中的
A.①处 | B.②处 | C.③处 | D.④处 |
A.青藏地区 | B.西北地区 | C.长江中下游平原 | D.东北平原 |
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)