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（1）What’s this in English?
It’s a ______.
A.hen B.calf C.cow
（2）What are these?
They are _______.
A.goose B.cats C.geese
（3）How many ______ do you have a week?
We have two.
A.English classes B.music classes C.maths classes
（4）What’s wrong with you?
I have a _________.
A.cough B.stomachache C.toothache
（5）What can I do for you?
I want to buy a_______.
A.towel B.soap C.walkman
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
