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Liuyun: Wuyifan ,You look so happy today !
Wuyifan : Yes ,I have a good time on my holiday.
Liuyun: ___________________________on your holiday ?
Wuyifan : I went to Heilongjiang
Liuyun: ___________________________there?\
Wuyifan : I went by train.
Liuyun: What did you do there ?
Wuyifan: I _____________________ and _____________________.
Liuyun: ______________________
Liuyun: I go with my parents.
Wuyifan: It seams very nice.
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
