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Hello. My name is Tom. I’m ten years old. What country is next to Canada? It’s the U.S. I live in the U.S. Washington, D.C. is the capital city of the U.S. The president lives in the White House. The flag of the U.S. has stars and stripes. It's red, white and blue.
1．Tom is 12 years old.2．The U.S. is next to Canada.
3．Tom lives in Canada.
4．London is the capital city of the U.S.
5．The flag of the U.S. has stars and stripes.
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
