1.—What's the weather like in Beijing today? —It's windy and cold.
![](http://static.xuejinqu.com/qimg/e2c/e2c6d5be3563220d078d15b0119c461f.png)
2.—Where is the library? —It's on the first floor.
![](http://static.xuejinqu.com/qimg/ac9/ac9ab395c66a52cd6b7cd3611186720c.png)
3.—Are these carrots? —No, they aren't. They're tomatoes.
![](http://static.xuejinqu.com/qimg/2cb/2cb8849b5886b0d81bfb1b6d1a01ff4a.png)
4.—Do you like the skirt? —No, I don't. I like this dress.
![](http://static.xuejinqu.com/qimg/90c/90c686c42565038e158322a40a5eac9b.png)
5.—Are the sunglasses expensive? —No. They are cheap.
![](http://static.xuejinqu.com/qimg/9d1/9d120dd91a655c33d2c8aeebf6bdfc49.png)
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
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
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
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
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)