学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
选出与画线单词同类的一项。
(____)1. The pen is in the pencil box.
A. crayon         B. on         C. what
(____)2. Where is my car?
A. under     B. boat     C. your
(____)3. Is it in your hand?
A. desk     B. head     C. I
(____)4. Are you under the table?
A. where     B. a     C. is
(____)5. Do you like oranges? (含有相同短元音)
A. mother     B. body     C. no
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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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