Hi,
订阅
报纸
纸质报纸 电子报纸
手机订阅 微商城
英语
学习
双语学习 热点翻译 英语视频
实用口语 报纸听力 欧美金曲
教育
信息
最新动态 活动预告
备课资源 语言文化
演讲
比赛
精彩演讲
活动动态
用报
专区
中学Teens
小学Kids
教案 课件 试题考试指导
高中    高一    高二    高三     |     初中    初一    初二    初三     |     小学         |     画刊    
高二教案 第808期(2)
发布时间:2020-10-26

本期配套教案共2页:  1  2

2020-2021学年度第9期总第808期
Evolving state of humans (P6)
邯郸市第一中学 王琪
Warm-up
Answer the following questions.

1. What is the process of humans’ evolution like?
2. Have humans stopped evolving?

Lead in
Are humans still evolving?

A new study by Australian scientists shows that humans are evolving at a faster rate than at any point in the past 250 years.

Read for main idea
1. What did the scientist discover?
 
   Scientists discovered that more and more adults have an extra artery (动脉) in their arms as humans continue to evolve at a rapid rate.

2. The passage is organized by

Read for details
2.1 Current state of human evolution and recent discovery
The median artery forms in the womb. It usually disappears at around eight weeks and is replaced by the radial and ulnar arteries. But some people retain all three.

Recent discovery

Scientists have been studying the prevalence of this artery since the 18th century and found a significant increase of the artery since the late 19th century.

2.2 Possible reasons for evolutionary change

a. Gene mutations
b. Health problems in mothers

2.3 Effects of the change
It is a great sign for the health of the human body. It increases the overall blood supply.

2.4 Other examples of the human evolution
• babies born without wisdom teeth
• additional bones in arms and legs
Read for thinking
What is the reason for these changes?

本期配套教案共2页:  1  2

Most Popular

 

 
热点翻译


 

标题
内容
关闭
内容
联系我们   |    诚聘英才   |   演讲比赛   |   关于我们   |   手机访问
英文二十一世纪(北京)教育传媒发展中心版权所有,未经书面授权,禁止转载或建立镜像。
主办单位:中国日报社 Copyright by 21st Century English Education Media All Rights Reserved 版权所有 复制必究
网站信息网络传播视听节目许可证0108263   京ICP备13028878号-12   京公网安备 11010502033664号