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It was Saturday yesterday. My friends didn't go to school. Amy did her homework at home. She worked hard. Rita didn't go out, either. She helped her parents cook noodles. They were very happy. Sam went to the Great Wall. He saw lots of mountains. He also bought a present for his mother. What about Leo? He ate a lot of candies and had a toothache (牙痛). His father took him to the hospital. The doctor said.? Don't eat too many candies!”
A.
B. 
C. 
D. 
1．Amy
2．Rite
3．Sam
4．Led
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
