Last week we learned a lot from social studies . We learned about some interesting animals . They are called dinosaurs. Dinosaurs were huge animals .They lived millions of years ago .They were tall, big and strong. Some could ran very fast , but some only walked slowly, some could fly. Some dinosaurs ate grass and plants and some ate meat .
( )(1)We learned about some interesting animals .
( )(2)We learned a little from social studies .
( )(3)Dinosaurs lived millions of years ago .
( )(4)All dinosaurs could run very fast.
( )(5)Some dinosaurs ate grass and plants and some ate meat.
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