
“The Twenty-Four Solar Terms” is known as the 5th great invention from ancient China. As the 18th solar term, Oct. 23 marks the
The solar term Shuangjiang
The Frost’s Descent, with clear autumn skies and refreshing air, is an excellent time
During this bright period, Chinese people also enjoy chrysanthemums (菊花), a kind of autumn flowers, which come out in late autumn and are known
Eating orange-colored persimmons (柿子) is another traditional Chinese custom. The Chinese think these orange fruits not only keep out the cold, but also provide the human body
Shuangjiang, as the last solar term of autumn, is an end as well as a start for Chinese people to work for a happier and

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

