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Paul: No. I'm writing an email to my pen pal in America.
Bob: A pen pal in America?
Paul: My English teacher gave me his QQ. We talk on QQ every weekend. Sometimes we send emails.
Bob: Cool!
Paul: Yes, he does. He is a pupil, too.
Bob: What are his hobbies?
Paul:
Bob:
| A．How do you know him? |
| B．He likes doing word puzzles |
| C．Are you playing computer games? |
| D．Amazing! |
| E．Does he live in New York? |
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
