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China made its first stamp in 1878. There was a very big dragon on the first stamp. Behind the dragon there are clouds and waves. 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. People love these stamps.
1．China made its second stamp in 1878. （______）2．There was a very cute panda on the first stamp. （______）
3．People love to collect Chinese stamps. （______）
4．Chinese stamps are famous because they are very old. （______）
5．Chinese stamps show Chinese history, people, places and animals. （______）
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
