题目内容：

阅读课文缩写材料，在空白处填入1个适当的单词或括号内单词的正确形式

The Longji Rice terraces，1.（build）by the local ethnic groups between Yuan Dynasty and the early Qing Dynasty，have different colours in different seasons．Thousands of visitors 2.（attract）to come here every year to admire this great wonder created by people and nature working together．The terraces could not only increase the areas 3. they could grow rice but also catch the rainwater and prevent the soil from 4.（wash）away．What is most significant is 5. people have worked in harmony with nature．The terraces are 6.（clever）designed with hundreds of waterways 7.（connect）with each other．Rainwater，along with these waterways，8.（move）down the mountains and into the terraces．The sun heats the water and turns it into gas，9. forms clouds from which rain falls down onto the mountain terraces once again，10.（provide）a perfect environment for birds and fish，some of which feed on insects that can harm the rice crops．