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,找出句子中你所听到的内容,并将其序号写在题前的括号内。
( ) 1. A.      B.      C.
( ) 2. A.        B.        C.
( ) 3. A.                     B.         C.
( ) 4. A. 896       B. 986             C. 869
( ) 5. A. skirt       B. shout       C. shirt
( ) 6. A. black          B. blackboard       C. black bag
( ) 7. A. stand up       B. sit down       C. wake up
( ) 8. A. It’s time for class.       B. It’s time to meet friends.       C. It’s time to talk.
( ) 9. A. These are ants.       B. These are aunts.       C. These are uncles.
( ) 10. A. Look at the boy.       B. Look at the blue sky.       C. Look at the blue sweater.
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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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