学进去-教育应平等而普惠
试题
类型:短文综合填空
难度系数:0.65
所属科目:初中英语
根据所给汉语或英语首字母写出短文中所缺英语单词。

As Chinese students, we must know something about a great man c1. Zheng He. He was a Ming Dynasty explorer. He led seven ocean journeys from 1405 to 1433. At that time, the compass p2. an important role in his sailing. He even succeeded in sailing to the east coast of Africa. His last ocean journey was over half a 3. (世纪) earlier than Columbus’ first journey to America. We Chinese are 4. (骄傲的) of him. It’s a pity that he died of illness on his way home from Africa in 1433. H5., his journeys were so meaningful in China’s history.

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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

用户名称
2019-09-19

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

用户名称
2019-09-19
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