学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.64
所属科目:小学英语
判断正误。
Do you know tigers, leopards and lions are big cats? Cats catch and eat other animals. Cats can climb the trees. In a lion family, mother lions catch the animals. Father lions sleep a lot. Tigers are very big cats, too. They catch animals at night. They can climb the trees, too. Big Cats are very beautiful and strong(强壮的).

(1)Tigers are not cats.(2)Father lions sleep a lot.(3)Leopards are Big Cats, too.(4)Father lions catch the animals.(5)Big Cats are not beautiful.
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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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