题目内容
4. What a great surprise!The boy didn't expect that his father (buy) him a computer as his birthday present.
Imagine that it's a hot summer day. You put an ice cream on the sidewalk,and it melts (融 化) .Why does this happen? Well,you may know that the sun causes the ice cream to melt. But you may not know that we get solar energy from the sun. Solar energy is another way of saying “energy that comes from the sun. ” Solar energy can be used to heat homes,buildings，water,and to make electricity (电) .
Cars are an important part of life for most people. But cars also cause pollution and give out a lot of greenhouse gases into the air. It's lucky for us to have some cars that are better for the environment now. These cars can travel longer with less gasoline (汽油) . They don't pollute much,either. There will be less greenhouse gases if we use these kinds of cars.
Many things,like computers, TVs,and VCRs,have special labels (标签) on them. You can find the word “Energy” on the label and it also has a picture of a star. Products that have ENERGY STAR labels are made to save energy. Buying such products will help protect the environment.
How to protect the environment | |
Different 1 | Detailed information |
Buy recyclable products | The recycle symbol—three arrows that make a circle. Recyclable products are usually made out of things that already have been 2 . |
Use solar energy | The sun 3 solar energy. Solar energy can be used in many ways. |
Use new types of cars | Most people are used to 4 on cars to travel. Using these kinds of cars can help reduce less greenhouse gases in the air. |
Buy products with ENERGY STAR labels | The label 5 “Energy” has a picture of a star. These products are made to save energy. |