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Tree Planting Day is on 12th March. Many people go to plant trees in the fields. But some people cut down trees. They want more houses, roads and buildings. Because there are fewer trees, the weather is getting hotter. “Stop cutting trees! “We should tell them. Trees help to make the air cool, and fresh. Trees also help to make the place beautiful. Let’s plant more trees to make the Earth clean and green.
1．Tree Planting Day is in the spring. ( )
2．People go to plant trees on the beach. ( )
3．We shouldn’t stop cutting trees. ( )
4．Trees can make the air hotter. ( )
5．We should plant trees. ( )
6．Trees can ________.
7．Trees can ________.
8．Trees can ________.
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
