搜索
Mary: Grandpa,
Grandpa: It’s me, when I was 32 years old.
Mary: Really?
Grandpa: Yes.
Mary: You were so strong.
Grandpa: Of course. I rode a bike to work every day.
Mary:
Grandpa: It took me about 40 minutes.
Mary: Wow! That’s why you were so strong.
Grandpa: Yes.
Mary: But now?
Grandpa: Haha. Thank you, Mary.
| A．But now... |
| B．How long did it take |
| C．Were you at a factory in the photo |
| D．You still look young and strong |
| E．I was a worker there |
| F．Who’s the man in the photo |
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
