D．Australia was also awarded in the competition

　　B

　　Thoreau and other naturalists have praised the benefits of nature to your state of mind in their works, but there are some researches showing how nature makes you smarter. A study has found that exposure to the great outdoors improves cognitive(认知的) function. Experts have called this attention restoration therapy(注意力修复治疗).

　　In the study, researchers from the University of Michigan asked a group of volunteers to complete a take designed to challenge memory and attention. The volunteers then took a walk in either a park or in downtown Ann Arbor. After the walk, volunteers returned to the lab and were retested on the task. The performance on the memory and attention task greatly improved in people following the walk in the park, but did not improve in those who walked downtown.

　　Why nature makes you smarter? According to the experts, one reason has to do with how nature affects your attention. You have two types of attention. One is involuntary, where your attention is attracted by some stimuli(刺激物). And the other one is directed attention, where you control your attention. Directed attention is important for memory, resolving conflict and reducing absent mind.

　　Being in nature exposes you to soothing stimuli that engages your involuntary attention. It gives your directed attention a rest and a chance to become renewed. When you are in a city, you are constantly vigilant(警觉的), your directed attention is turned on and cannot get a rest.

【2017届广东省广州市天河区高考英语一轮复习同步练习：14（含答案）】相关文章：

★ 2014届高考英语一轮复习课时作业(四)必修1Module 4《A Social Survey—My Neighbourhood》（外研版）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (71)

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

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（8）及答案

★ 2017高考四川省广安市英语阅读理解一轮系列训练：26（含解析）

★ 2017届高考英语二轮复习书面表达限时测验：7（含解析）

★ 2014届高考英语一轮复习课时作业(三十五)选修6Module 5《Cloning》（外研版）

★ 【人教版】2014届高考英语一轮复习指导考点针对练：选修8 unit4《Pygmalion》

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (36)

★ 2014高考英语（新人教版）一轮基础训练（20）A、B卷（附答案或解析）