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Dear Lily,
Thank you for your letter. We are so happy to be your pen friends. We are American but we live in China now. We like China very much. It’s so great. We have a lot of friends here. They wanted us to ask you to come here.
I like flying kites. I bought many Chinese kites. Look, there’s a photo of me. I’m flying a dragon kite. Alice’s hobby is collecting stamps. She has got many stamps from many countries. We are waiting for your coming.
From,
Mike and Alice
1．Lily is Mike and Alice’s pen friend.2．Mike and Alice live in America now.
3．Mike’s hobby is flying kites.
4．In the photo, Mike is making a dragon kite.
5．Collecting stamps is Lily’s hobby.
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
