小组成员的观点 | 1. Follow traffic rules. 2. Don’t eat junk food. 3. Don’t swim in the rivers without an adult. 4. Don’t hang out alone at night. 5. e careful online. |
1文章需包含所提示的内容,可以适当发挥,以使全文语句通顺,语意连贯:
2词数100左右,开头已给出,不计入总词数。
Nowadays, safety is very important for us. How can we keep safe? In the English class, we had a discussion in groups. Here is the result of my group. First,
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
同类型试题
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
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