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:0.65
所属科目:小学英语
听录音,选择你所听到的单词或词组,并将正确答案的字母代号填在题前括号内,每小题听三遍。
(      ) 1. A. by train                    B. by subway        C.by bus
(      ) 2. A. library                      B. bookstore        C. cinema
(      ) 3. A. next week                 B. tomorrow        C. this morning
(      ) 4. A. go to the cinema        B. take a trip        C. see a film
(      ) 5. A. comic book               B. dictionary        C. word book
(      ) 6. A. post office                 B. hospital          C. crossing
(      ) 7. A. dancing                    B. doing             C. singing
(      ) 8. A. supermarket             B. factory            C. home
(      ) 9. A. fisherman                 B. postman          C. worker
(      ) 10. A. worried                  B. sad                 C. happy
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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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