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类型：用单词的正确形式完成短文

难度系数：0.40

所属科目：初中英语

thank eraser welcome call some help we about library when

Good morning! 1． to our school. This is 2． classroom and that is the 3． of our school. In our school, there is a Lost and Found box. It can 4． students find things like books, pens, 5．, ID cards and 6． baseballs. If you can’t find your things, you can go there and ask the teacher 7． them. But you should say “Excuse me” first. You can also send e-mails or 8． the teacher. 9． you find your lost thing, you should say “10．” to the teacher.

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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

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2019-09-19

用户名称

2019-09-19

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