学进去-教育应平等而普惠
试题
类型:其他应用文
难度系数:0.65
所属科目:高中英语
假定你是李华,是你校“校园之声”广播英语主持人。春节临近,你想呼吁大家以更环保的方式出游。请根据以下要点写一篇倡议稿:
1. 选择环保的交通方式;
2. 爱护旅游景点;
3. 自带水,少买包装饮料。
注意:1. 词数100左右;
2. 可以适当增加细节,以使行文连贯;
3. 开头语已为你写好,不计入总词数。

Good afternoon, my fellow students. I am Li Hua, host of Voice of the Campus today.


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Li Hua

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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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