![](http://static.xuejinqu.com/qimg/f3b/f3b91b035bc33e624b76bbfe29248aa9.png)
(1)A:What are you doing, Sam?
B:I am _________.
(2)A:_____ is she?
B:She is Mary.
A:_____ is she doing?
B:She’s writing.
(3)A:_____ _____ your sister?
B:Yes, she is.
A:What ______ _____ _____?
B:She is working.
(4)A:Do you like English?
B:No, I ______.
A:What do you like best?
B:I like ______ best.
(5)A:_____ ______ _______ _______?
B:I’m from England.
A:_____ ______ like singing?
B:Yes, I do.
![](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)