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A: Mum, look at the giraffe. How tall!
B: Oh. They are so tall.
A: Wow! What a big elephant!
B: But it has a short tail.
A: Look, monkeys!
B: How many monkeys can you see?
A: Let me count. 1,2,3… I can see ten monkeys.
B: That's right. Oh, look at the pandas. How cute!
A: Yeah! They are cute.
（ ）1. The giraffes are so tall.
（ ）2. The elephant has a long tail.
（ ）3. They can see ten monkeys.
（ ）4. The pandas are cute.
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
