电子课本网 第73页

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Each competitor had to go online and buy enough food and drinks to last them for 100 hours using the little money given.
Because they are afraid that their children spend too much money./Because their children will lose money at 
online stores./Because online stores may cheat their children.
Yes. Because the things are much cheaper online than in the shopping mall./No. Because some stores online 
often cheat the customers.
        Nowadays. throw away chopsticks are widely used in our daily life. But many people haven't realized 
how harmful they are to the environment. The production of throwaway chopsticks causes the loss of large 
numbers of trees every year, leading to smaller areas of forests in the world. As we all know, trees help 
reduce pollution and keep soil in place. As a result, the weather will get hot and dry and more natural 
disasters may happen.
        So we should take action to protect the environment. To begin with, everyone should reduce the 
use of throwaway chopsticks and plastic products. Moreover, the government is expected to make strict 
laws to stop forest cutting. In this way, we can protect the nature.