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
选出听到的内容,写字母编号。
(      )1. A. brown                      B. blue                                C. black
(      )2. A. face                         B. cake                              C. foot
(      )3. A. six                           B. seven                            C. school
(      )4. A. pig                           B. big                              C. dog
(      )5. A. ice                           B. rice                              C. juice
(      )6. A. eraser                      B. pen                              C. pencil
(      )7. A. what                       B. water                            C. white
(      )8. A. two                           B. three                           C. ten
(      )9. A. Hew many birds?        B. How are you?             C. How old are you?
(      )10. A. Good morning.          B. Good afternoon.            C. Goodbye.
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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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