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Amy:1.
Mum:It’s an e-book.
Amy:2.
Mum:There are lots of different books in it.
Amy:3.
Mum:Of course.There’s lots of information in it.
Amy:4.
Mum:Yes!You can read or even( 甚至 )listen to it.Here you are.
Amy:5.
| A．What’s in it? |
| B．Great! |
| C．What’s this,mum? |
| D．Can we find information from it? |
| E．Is there a book about English? |
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
