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假定你是李华，请阅读笔友Mike的邮件并回复。给他至少3条建议且说明理由。词数100左右，开头和结尾已给出，不计入总词数。
| To: Li Hua From: Mike |
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| Dear Li Hua, Is everything going well with you? I have to share a room with my little brother, and he’s driving me mad! He has a habit of playing the guitar when I’m studying, and he always takes my things without asking. I try to keep my room tidy, but he doesn’t. I love my brother, but sometimes he’s making me so angry! What should I do? Would you please give me some advice? All the best , Mike |
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| To: Mike From: Li Hua | |
| Dear Mike, ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Li Hua | |
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
