任务型阅读。
根据短文内容，判断正误，正确的写（T），错误的写（F）。
     Electricity can be made by burning gas and coal  (煤). It can also be made by using power from the
sun and wind which is more friendly to the environment. As we know, electricity is very useful in our daily
life. We use it for lighting, heating and so on. It makes telephones, radios, televisions and computers work. So it isvery important and we should save it. Here are'some tips for us:
▲Turn off televisions and lights when they are not in use.
▲ Use energy efficient (节能) light bulbs. They will last longer and save much.
electricity.
▲ Keep our fridge at 37°F- 40°F and our freezer at 50F.
▲ Put lamps in comers of rooms, so they can reflect (反射) light from two walls instead of one.
▲ Turn down the central heating a few degrees. Sometimes we do not need so much electricity to keep
     the house warm.
▲Don't always use the drier to dry our hair after bathing.
(     )1.Electricity can only be made by using power from the sun and wind.  
(     )2. We should turn off the televisions and lights when they are not in use.
(     )3. Keeping our fridge at 45 °F is the best.
(     )4. We'd better use the drier to dry our hair after bathing.
(     )5. The passage  is mainly about some tips for saving electricity.