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I’m Becky. I have a good friend. Her name is Susan. I’m older and taller than her, but she is 
(更瘦的) than me. Last summer holiday, we went to Guilin together. We went there by train. On the first day, we 
(去划船) and watched the show about Liu Sanjie. On the second day, we (骑马). That was fun! On the third day, We (吃新鲜的食物) and (买礼物) for our parents. We had a great time in Guilin.
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
