搜索
| fun card all from home |
Daniel goes to the library. He needs to borrow books on giraffes. The library has 1． kinds of books. The library has movies and CDs, too. Daniel doesn’t have books on giraffes. He actually doesn’t buy so many books. He thinks reading is 2．but buying books is a waste of money. Why do you buy books if you can borrow them 3．the library? So he wants to have a library 4． . He gets a form from the library and fills in his information. There are some basic questions. He signs his name at the bottom. He borrows 10 books on giraffes. He goes to the check-out desk. The librarian scans the book. He takes the books5． . He looks really happy.
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
