学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.65
所属科目:小学英语
Listen and choose. 听录音,我能选出每个问句的答语字母代号。
(      ) 1. A. Glad to see you, too.               B. Good morning.                 C. I’m fine.
(      ) 2. A. He’s running.                         B. He’s eleven.                    C. I’m 12.
(      ) 3. A. You’re welcome.                    B. ByeBye.                         C. Have a nice day.
(      ) 4. A. I will go to the park.               B. We go to the library.          C. I went to the museum.
(      ) 5. A. We have a party.                    B. June 1st.                         C. It’s in September.
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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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