A.
![](http://static.xuejinqu.com/qimg/b8a/b8a005195ca7c0d1af23cc0cb3b271a3.png)
![](http://static.xuejinqu.com/qimg/ec1/ec1da4a7b1e80f0e5b3a2aee198baabf.png)
![](http://static.xuejinqu.com/qimg/6cd/6cd5247016acd25534ac482787a596eb.png)
D.
![](http://static.xuejinqu.com/qimg/ea7/ea783867bb3a7b5272760ed8fce8bdfe.png)
![](http://static.xuejinqu.com/qimg/8ff/8ff00abb04e06286fb9f6759c87ce01e.png)
1.—One pear, please! How much is it? (
—Two yuan, please.
2.—How many girls? (
—Two.
3.—Open the door, please. (
—OK.
4.—What is it? (
—It’s an apple.
5.—Are these your rulers? (
—Yes, they are.
![](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)