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假设你是豪华,是你校英文报的一名编辑。本期你打算在你负责的专栏“Traditional Chinese Art”中介绍中国特色产品油纸伞(oil-paper umbrella)。请你根据以下提示和要求，以“The oil-paper umbrella”为题写一篇英语短文,把它介绍给读者。提示:
 | History | more than 1,000 years |
| Place | Luzhou, Sichuan Province | |
| Material | cotton paper with tung oil (桐油); bamboo | |
| Process | half a month; by hand | |
| Use | protect people from the sun and the rain |
The oil-paper umbrella
The oil-paper umbrella is a kind of traditional Chinese umbrella.___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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
