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A: Excuse me. 1 that girl?
B: Oh, that’s my sister, Sally.
A: 2 is she?
B: She is nine. She 3 a student.
A: What’s 4 her schoolbag?
B: There are many 5 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
