学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.85
所属科目:小学英语

听录音,选出你所听到的单词,将其代号填入括号里。

(     ) 1. A. had                                 B. did                           C. read

(     ) 2. A. went                           B. ate                           C. hurt

(     ) 3. A. last                             B. slept                           C. gift

(     ) 4. A. took                           B. rode                           C. food

(     ) 5. A. bought                         B. holiday                    C. yesterday

(     ) 6. A. camping                    B. fishing                    C. boating

(     ) 7. A. younger                           B. longer                    C. stronger

(     ) 8. A. watched                           B. cleaned                    C. stayed

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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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