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China made its first stamp in 1878. The first stamp had got a very big dragon on it. People all over the world love to collect stamps from China. Chinese stamps are famous because they are very beautiful. They also show Chinese history, people, places and animals.
Now, many stamps in China are children's paintings. People love these stamps.
1．When did China make its first stamp? ( )| A．In 1878. | B．In 1787. | C．Now. |
| A．The Great Wall. | B．A very big dragon. | C．Some animals. |
| A．America | B．all over the world | C．China |
| A．they are very cheap | B．they are very beautiful | C．they are very big |
| A．Many superstars. | B．Some places. | C．Many children's paintings. |
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
