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Mike and his friends did a project about how to save water on Sunday. They made a poster about it. Mike drew some pictures on the paper, and Liu Tao wrote some words about how to save water. It said “Water is useful. We should save water. We can use dirty water to water flowers. We can collect rain and use it to water trees.” They put the poster in front of their classroom.
( ) 1.Mike and his parents did a project on Sunday.
( ) 2.Liu Tao wrote some words on the poster.
( ) 3.To save water, we can use clean water to water flowers.
( ) 4.We can collect rain and use it to water trees.
( ) 5.The poster is about how to save trees.
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
