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Wang Wei and Li Lei are good friends. They are Chinese. But they are working in America. Sometimes they miss their family. So they always go to Chinatown. There are lots of Chinese shops and restaurants there. They go shopping and eat delicious food there. You know, Wang Wei and Li Lei really miss China and they both like Chinese food.
1．Are Wang Wei and Li Lei brothers? ( )| A．Yes, he is. | B．No, they aren't. | C．Yes, they are. |
| A．They work in Canada. | B．They work in America. | C．They work in England. |
| A．Chinese | B．American | C．Canadian |
| A．Yes, there is. | B．No, there aren't. | C．Yes, there are. |
| A．Yes, they are. | B．Yes, they do. | C．No，they don't. |
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
