【正文】
et, quick, energy efficient, no pollution It will cause an increase in electricity needs. much more expensive than traditional trains. 1b power stations the movement of water the wind power solar energy a. There are more than 3 000 power stations in the world that produce electricity by burning garbage to heat water. b. People use the movement of water to produce electricity. c. Wind is used for producing electricity in many places. d. People produce electricity from the sun. ( b ) ( c ) ( d ) ( a ) 2a What habits are good for the environment? List as many as you can. The more you list, the greener you are. Good Habits 1. Turn off the lights when you leave a room. 2. Walk or ride a bike instead of taking a bus or a taxi. a cloth bag when you go shopping. 39。