__4__ But Professor Swihart says their numbers began to decrease as more forests were cut for agriculture. Red squirrels began to spread through the state during the past century. The researchers say red squirrels are native to forests that stay green all year, unlike walnut trees. They say the cleaning of forest land for agriculture has helped red squirrels invade (涌入) Indiana. __5__

　　A．Gray squirrels are native to Indiana.

　　B．But they seldom remember where they buried every nut.

　　C．Red squirrels bury nuts in a different way.

　　D．The black walnut is the nut of choice for both kinds of squirrels.

　　E．Jake Goheen calls them a sign of an environmental problem more than a cause.

　　F．Scientists are worried that they will drive away the gray squirrels.

　　G．Well, scientists have been busy gathering information about what the squirrels do with the food they collect.

　　本文为说明文，讲述的是研究发现松鼠在收集walnut时存在的一些不同，并通过研究寻找这些不同的原因。

　　1．G　根据下段“They examined differences between red squirrels and gray squirrels in the American state of Indiana.”可知该项中的scientists为关键信息。

　　2．D　根据空后句“The black walnut tree is also a central part of some...”中的also可知。

【2017届高考英语一轮复习单元训练：1.4《Earthqu kes》（新人教版含解析）】相关文章：

★ 【浙江专用】2014届高考英语一轮复习课时作业(三十二)选修7Unit 2《Robots》

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (6)

★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五：体验真题（含解析）

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 1 B卷 Word版含解析

★ 2017届高考英语二轮复习课时训练：2（含解析）

★ 2014届高考英语一轮复习课时作业(十一)必修2Module 5《Newspapers and Magazines》（外研版）

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

★ 【三维设计】2017届高考英语（江苏专用）二轮复习课件：必修1 Unit 3《Looking good feeling good》

★ 湖南省岳阳市2014高考英语一轮单项选择训练题（16）及答案

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习书面表达专题训练：Ⅱ卷强化增分练 训练3（含解析）