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| Advantages | Disadvantages |
| 可以节省资源，减少浪费 | 教材内容经常更新 |
| 节约家庭开支 | 不能在书上作笔记 |
| 西方国家普遍采用此作法 |
(2)报道的开头部分已写好，只需接着写。（不记入总字数）
(3)词数1 20左右。
Is Recycling Textbook a Good Suggestion?
On behalf of our group，I'd like to give a brief summary of our discussion on the topic “Is Recycling Textbook a Good suggestion?”
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
