①海拔越高,气温越低。海拔每上升1000米,气温下降0.6℃
②安第斯山区的气候和植被类型复杂多样,从山麓到山顶气候差异显著
③安第斯山区的高海拔处,印第安人开辟梯田,种植玉米,马铃薯、小麦和大麦等农作物
④安第斯山区地势崎岖, 气候寒冷,空气稀薄,对人类活动造成许多限制
A.①② | B.②③ | C.②④ | D.①④ |
同类型试题
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
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