past thirty starts kind pl - 学进去中小学试卷试题库

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类型：选内容补全对话

难度系数：0.65

所属科目：小学英语

past thirty starts kind playground

Ann studies (学习) in an English (英国的) school. Her school 1． at nine o’clock. Ann goes to school at half 2． eight every day. She has classes in her classroom. She plays in the 3．. There are 4． pupils in her class. Her teachers and classmates (同学们) are very 5．. There are some classroom rules in her class. Ann loves her school day.

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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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