David is an English boy. His bedroom is small, but very nice. There is a desk, a bed and a chair in it. On the wall, there are four pictures and a map of China. On the desk, there is a photo of his family. There are lots of English and Chinese books in the bookcase, and there is a toy plane on the bookcase. David likes playing football. Where is his football? Look, it’s under the chair. We can see a black cat under the chair, too. It’s David’s friend.
( )(1) This bedroom is big and nice.
( )(2) The four pictures are on the wall.
( )(3) There are lots of pictures in the bookcase.
( )(4) David has a toy plane.
( )(5) There is a football and a cat under the chair.
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