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There are 56 states in America. California（加利福尼亚州）is one of the 56 states in America. It is in the west of America. San Francisco is an important city in the west of California in America. Los Angeles is in the southwest of California. Los Angeles is called "the City of Angles".
1．How many states are there in America?（ ）| A．There are fifty-five. | B．There are fifty-six. | C．There are forty-six. |
| A．It's in the west of America. |
| B．It's in the east of America. |
| C．It's in the south of America. |
| A．It's in the northeast of America. |
| B．It's in the east of America. |
| C．It's in the southwest of America. |
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
