1、本网站免费注册后即可以下载，点击开通VIP会员可无限免费下载！
2、资料一般为word或PPT文档。建议使用IE9以上浏览器或360、谷歌、火狐浏览器浏览本站。
3、有任何下载问题，请联系微信客服。
扫描下方二维码，添加微信客服
必修三《Unit 1 Nature in the balance》Building your language优秀ppt课件
of the words and phrases in the box below.
agriculture impact thus due to
variety survive beneath break down
The Amazon rainforest is home to a great (1)?_______ of plant life; however, its soil is surprisingly poor in nutrients. In fact, the soil in the region cannot support (2)?__________ for more than a few years. If a scientist is shown a report listing the nutrients of that soil, he or she will probably think that only desert plants can (3)?_______ in it! Then why is the soil so poor in nutrients? For one thing, the rainy season has a(n) (4)?________ on the soil.
variety
agriculture
survive
impact
P5 B1
In the rainy season, the water level can rise to more than 12 metres. When the water goes away, it takes away the nutrients in the soil. For another thing, (5)?________ the Amazon's hot climate, it is difficult for the soil to build up enough nutrients. Dead plants and animals (6)?________________ more quickly. The nutrients are soon taken in by the roots of the plants deep (7)?________ the ground. As a result, most of the forest's nutrients are locked up in the plants themselves, (8)?______ allowing them to grow at an unbelievable speed.
agriculture impact thus due to
variety survive beneath break down
due to
are broken down
beneath
thus
The documentary script uses some words with negative prefixes. Note the following prefixes and think of more words formed with them. Then fill in the table below with as many words as you can.
Prefixes
Words
un-