Ⅰ.从三个选项中选择最佳答案
1．Which of the following statements is True according to the passage?
A．The past development set alarm bells ringing.
B．The sustainable development is more suitable in the future.
C．The sustainable development is shortterm planning.
2．Which one is not nonrenewable sources of energy?
A．Solar energy. B．Coal. C．Oil.
3．What is the oldest and most common renewable energy sources?
A．Solar energy. B．Wind power.
C．Hydroelectricity.
【答案】 1.B 2.A 3.C
