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Tony：Hi，Jenny! It will he Helen' birthday next ________．What gift would you ________ her?
Jenny：I want to buy a ________ for her．She's practising baseball now．
Tony：That's a good ________!
Jenny：I'll put the ball into a beautiful ________ and let her guess．She'll find that's a wonderful present．
Tony：Great! That's very interesting．
Jenny：What's your ________，Tony?
Tony：It's a secret．I can't ________ you now．
Jenny：OK．Let's go to ________ a baseball right away．
Tony：Let's go!
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
