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,选择合适的应答语。
(      ) 1. A. At six.              B. In the morning.              C. On foot.
(      ) 2. A. He’s going to watch TV.                            B. I’m going to have an English class.
C. She’s going to play the violin.
(      ) 3. A. He likes reading books and watching TV.
B. She is sad.
C. I’m going to fly kites.
(      ) 4. A. Yes, he is.        B. No, he can’t.              C. Yes, he does.
(      ) 5. A. Take a deep breath.                                  B. You won’t feel so angry.
C. He should see a doctor.
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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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