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Paul: I'm really sorry.1．
Kate: Why didn't you drive your car? It's faster than taking a bus.
Paul: 2．
Kate: Really? But why?
Paul: Because I think it's our duty to care for our environment.
Kate: You have changed a lot.3．
Paul: I joined a volunteer club-Green Helper.The environmental problem is becoming more and more serious.It is time to take action to protect the environment, such as taking short shower, recycling books and paper, 4．
Kate: Well. They are easy and useful.But it's not convenient to go to work without driving a car.
Paul: 5．
Kate: Good idea. You're living a low-carbon(低碳) life and it's also a good way to exercise.
| A．What made you do that? |
| B．I had to wait for a bus for a long time. |
| C．What's wrong with your car? |
| D．I am going to buy a bike and then ride to work. |
| E．I won't drive unless it is necessary. |
| F．turning off the lights before leaving. |
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
