|
|
托福备考你是否因做无效题而浪费时间你是否天天刷题，但总是低分徘徊一次次考砸，心累到吐血？小编倾力整理了考试提分有用的干货——托福阅读单项题，帮助学子们更好的备考。
TPO5托福阅读Passage1原文文本
Minerals and Plants
Research has shown that certain minerals are required by plants for normal growth and development. The soil is the source of these minerals, which are absorbed by the plant with the water from the soil. Even nitrogen, which is a gas in its elemental state, is normally absorbed from the soil as nitrate ions. Some soils are notoriously deficient in micro nutrients and are therefore unable to support most plant life. So-called serpentine soils, for example, are deficient in calcium, and only plants able to tolerate low levels of this mineral can survive. In modern agriculture, mineral depletion of soils is a major concern, since harvesting crops interrupts the recycling of nutrients back to the soil.
百度云盘下载，回复可见提取码：https://pan.baidu.com/s/1Jv_dKo58CKZqniVjhLIoJQ游客，如果想要查看本帖资源下载地址或者密码，请 回复
|
|
/3 
发表于 2019-4-10 16:21:18
![4R5][3`9W(WS]1}592SU$_E.png](data/attachment/forum/201904/10/161909jrlzh65hr4mq9qz0.png "4R5][3`9W(WS]1}592SU$_E.png")
发表于 2021-4-17 14:59:34
