As we all know forests are important to all living things. What will happen if all forests disappear? A lot of plants will die and wild animals will lose their homes. Farmland will soon change into desert.     1     won’t be enough rain and the weather will be hot and dry. Our living environment     2     become worse and worse. Life will be very hard for everybody.

Forests play     3     important role in protecting the environment. They can keep water, and they can also stop the water     4     blowing the earth away. With a large area of forest, the weather will get more humid (湿润的) and the air will be fresh. It is our duty     5     protect the forests. Everybody should try his best to take care of trees instead of cutting down trees. Plant more trees and make the world greener!

There are several different kinds of sea turtles in the world. The sea turtles are endangered. Several are in danger of being gone     1     (complete).

Sea turtles lay large groups of eggs under the sand on beaches. The eggs face many challenges, both natural and man-made. In Costa Rica, one big challenge is poachers (偷猎者)—they take the eggs in order to sell     2     (they). It is against the law.

Kim Williams Guillen is     3     scientist. She works for the University of Michigan and Paso Pacifico. She works     4     (protect) animals in Costa Rica.

After     5     (watch) some TV shows, Kim Williams Guillen suddenly had an idea—what if poachers could be followed by using a fake (假的) turtle egg     6     a GPS tracker (跟踪器) inside?

Dr. Williams Guillen showed that idea and it won a $10,000 prize. She then worked with other scientists to create the fake egg. It was made of a special material, just like a ping-pong ball. It only cost a little money,     7     they made a lot of fake eggs.

The scientists put some fake eggs into 101     8     (difference) turtle nests on four beaches in Costa Rica. The results showed that most eggs     9     (sell) to local people.

That wasn’t a big     10     (surprised), since in Costa Rica, turtle eggs are considered a special kind of food.

The scientists are excited about the results of the fake eggs. The test shows that such simple ways can work well. The scientists believe that similar ideas could be helpful in other places as well.