Some trees act as natural fertilizers.They take nitrogen(氮气) out of the air and put it in the soil.Scientists at the Center say the use of fertilizer trees can reduce the need for chemical nitrogen by up to three­fourths.Trees also capture carbon dioxide，a gas linked to climate change.

　　1．Through the study，the researchers found that

　　.

　　A．there are more trees on farmlands than expected

　　B．fewer trees are being cut in developing countries

　　C．most farmers still don’t realize the value of trees

　　D．trees play a key role in preventing climate change

　　答案　A

　　解析　推理判断题。根据前两段可推知，该研究发现，农田的林木覆盖率超过了人们的预期。

　　2．How did the researchers feel about their findings?

　　A．Disappointed.

　　B．Surprised.

　　C．Puzzled.

　　D．Satisfied.

　　答案　B

　　解析　推理判断题。研究发现，农田的林木覆盖率比以前评估的要高出许多，这令研究人员感到非常意外。

　　3．Which of the following has the least tree cover?

　　A．Southeast Asia.

　　B．West Asia.

　　C．South America.

　　D．Africa south of the Sahara.

【2017届高考英语一轮复习基础巩固学案：Unit 5 Challenging Yourself Ⅲ（重大版选修7）】相关文章：

★ 2017届高考英语二轮复习书面表达限时测验：2（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第17组（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：3（含解析）

★ 2017届高考英语二轮复习课时训练：1（含解析）

★ 2017届江苏省淮安市新马中学高考牛津译林版英语一轮复习活动单：模块7 unit 4《Public transport》

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 3 B卷 Word版含解析

★ 2017届高考英语二轮复习课时训练：11（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍语法填空：体验真题（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：5（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍短文改错：体验真题（含解析）