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,选出听到的单词或短语,将其序号填入题前括号内。
______) 1. A. anything       B. animal                 C. elephant
______) 2. A. man             B. mango                 C. monkey
______) 3. A. four           B. nineteen            C. fourteen
______) 4. A. pineapple      B. hamburger             C. sandwich
______) 5. A. fruit             B. fridge                      C. friend 
______) 6. A. only             B. ouch                   C. cool
______) 7. A. hungry        B. wonderful           C. well
______) 8. A. would like       B. have a look             C. have a try
______) 9. A. grape juice    B. pear juice              C. apple juice
______) 10. A. his nose       B. his mouth              C. his hair
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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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