学进去-教育应平等而普惠
试题
类型:完形填空
难度系数:0.65
所属科目:小学英语

Welcome to our school. There ______ a robot in the library. It can ______ books and tell stories. There ______ two robots in the canteen. ______ can clean the desk. They can ______ the floor. They can ______. They are ______. But they ______ swim. ______ you want to be their friends? Please send me ______ email.

1.
A.areB.amC.is
2.
A.readB.readsC.reading
3.
A.areB.amC.is
4.
A.ItB.TheyC.I
5.
A.watchesB.playC.sweep
6.
A.cookB.cooksC.cooking
7.
A.quietlyB.helpfulC.quickly
8.
A.doB.canC.can’t
9.
A.AreB.IsC.Do
10.
A.aB.anC.some
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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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