Electricity is a type of energy that was discovered over 100 years ago. One of the most common w 1 to make electricity is by changing other energy sources (來源) ，such as coal,oil,solar,wind and falling water. You may not even realize that electricity is a huge part of your e 2 life. Basically,it keeps your home and school w 3 in winter and cool in summer. W 4 it,you would never be able to watch your favourite TV show or listen to your MP3 player. Have you ever i 5 a world in which you can't turn on a light,a computer,or even use the phone? So electricity is important to us and we n 6 electricity. That’s why it’s time to rethink our relationship with this v 7 resource (資'源) and think about h 8 we can do our part to use it wisely.

1. 2.3. 4.

5. 6.7. 8.

 1. ways   2. everyday   3. warm   4. Without   

 5. imagined   6. need   7. valuable   8. how

題目來源：2016年通城學(xué)典課時(shí)作業(yè)本九年級(jí)英語下冊(cè)譯林版 > 第 7 課時(shí) Task & Self-assessment

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(2015 •南京)

 Nowadays,the food that you buy comes from many different countries. Have a look in your fridge,cupboard,and fruit bowl and check the origins (來源) of the food. Perhaps there are apples from California,lamb fromNew Zealand,or potatoes fromEgypt. You will probably be surprised how far food travels to get to your plate. This journey,from “field to plate”，is called “food miles”. A food mile is the distance that food travels from the farmer’s field to the person who buys the food. Nowadays,food often travels thousands of miles to get to the consumer (消費(fèi)者) . Why is this,and what are the effects of these long distances?

Traditionally,farmers sold their food in the local market,so the food didn’t have to travel very far. The consumers also did not travel very far because they went to their local market to buy the food. This was a good system for farmers and consumers. However,there were some disadvantages. For example,consumers could only buy food that farmers produced locally. In addition,they could only get food that was in season. Now,because of modern technology,food comes from all over the world. We do not have to wait for spring or summer to buy strawberries or tomatoes. They are available in winter if we want.

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Is this not a good way of increasing international trade? I believe these miles are worrying for a number of reasons. First of all,because food travels such long distances,we need more planes,lorries and ships to move the food. This means we use more oil or petrol,so there is more pollution and more global (全球的) warming. In addition,food that travels a long way is not fresh and usually not very tasty. Tomatoes,for example,are picked early and stored for their long journeys. For this reason,they are usually tasteless when they get to the consumer. Local food has a better taste,and it also reduces the amount of global pollution. We need to buy more local food.

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