The method is gaining widespread use in countries such as Niger，Burkina Faso，Malawi and Zambia.The trees are planted among maize(玉米)，millet or sorghum crops.They not only add nitrogen(氮)to the soil through their roots，but also through their leaves when they fall off and break down.At other times of the year，the trees can protect plants from strong sunlight.

　　John Reganold says he knows of one woman who has had great success with perenniation.

　　“She's a grandmother in her fifties.Her_name_is_Rhoda_Mang'yana_and_she_started_using_this_system_about_twenty_years_ago.And her yields initially were about a ton of maize.Now with a good year she gets four tons per hectare，four times what she was getting.”

　　【解题导语】　如何在非洲土地有限、地力贫瘠的情况下，有效地改善土地状况，提高农作物产量呢？本文介绍了一种能有效提高土地的肥力，促进生产的耕作方式。

　　一、阅读与积累

　　1．攻克疑难词汇

　　①additional adj.另外的，额外的

　　②perennial adj.长久的、持续的

　　③yield n．产量，产出

　　④practice n．通常做法

　　⑤organic adj.有机的

　　2.攻克疑难句

　　(1)They have been actually using farming practices where they're not putting in organic matter.

【2017届高考英语复习冲刺阶段经典讲义系列突破阅读理解及书面表达 (4)】相关文章：

★ 2017届高考英语二轮复习大题冲关秘籍完形填空之夹叙夹议文：应试策略（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (46)

★ 江苏省扬州市2014高考英语一轮 阅读理解暑假练习题（10）

★ 2017届高考英语二轮复习大题冲关秘籍完形填空之记叙文：创新押题（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍语法填空：命题分析（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍语法填空：考纲解读（含解析）

★ 2017年高考英语二轮复习精品资料：专题14 阅读理解（教学案）（原卷版）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (82)

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (22)

★ 2017届高考英语二轮复习课时训练：3（含解析）