搜索
A：Excuse me．_________ that girl?
B：Oh，that’s my sister，Sally．
A：_________ is she?
B：She is nine．She _________ a student．
A：What’s _________ her schoolbag?
B：There are many _________ in it．It’s very heavy．
（ ）1．A．What’s B．Who’s C．Where’s
（ ）2．A．How B．Where C．How old
（ ）3．A．am B．is C．are
（ ）4．A．in B．on C．at
（ ）5．A．books B．book C．a book
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
