学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.85
所属科目:小学英语
读句子,选出下列句子中划线部分的正确翻译。
_______)1.Peter's mother is cooking in the kitchen.
A.家           B.厨房        C.卧室
_______)2.Peter's sister is reading.
A.看电视       B.读书           C.唱歌
_______)3.The dog is sleeping .
A.睡觉            B.跳舞            C.唱歌
_______)4.Peter is writing a letter.
A.写信           B.唱歌           C.喝水
_______)5. The cat is playing.
A.玩            B.跳舞            C.听音乐
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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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