1 . 阅读下列材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
Plastic is a huge problem for our planet. It is really 1 (challenge) to get rid of and a lot of it ends up in nature or in the ocean in particular. There, it is a threat 2 our animals and plants.
Now a company from the Netherlands, a small country in western Europe, says that it will use plastic 3 (find) in the ocean to build roads. Volker Wessels 4 (turn) the plastic into building blocks for the roads. They will be like puzzle pieces 5 fit into each other.
Not only will this be good for the environment, but also it will be good for the people who look after roads. If a part of the road 6 (damage), it will be easy to remove it and replace it with another piece. The company says that nearly any type of plastic can be used 7 (make) the road pieces.
Scientists 8 (work) on the project say that they are in the final stages of testing the materials for 9 (safe). They say that the first road built will be 10 bicycle path somewhere in the Netherlands.