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Our school is No. 1 Primary School in the country. It is very clean. You can see many trees, grass and flowers in it. There are about 350 students in our school. All of the students study hard. And there are nearly 50 teachers in our school. The teachers work hard, too.
( ) 1. Our school is very clean.
( ) 2. You can see many trees, grass and flowers in our school.
( ) 3. There are about 530 students in our school.
( ) 4. All of the students study hard.
( ) 5. there are nearly 50 teachers in our school.
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
