2017届高三（人教版）英语复习全国通用活页作业31_高考复习指南

2017届高三（人教版）英语复习全国通用活页作业31

　　3．What do we know from David Ludwig?

　　A．Many children will become thin after growing up.

　　B．The problem of obesity will become more serious in the future.

　　C．Childhood obesity is a longterm problem in America.

　　D．It is not necessary to worry about the problem of obesity.

　　解析：推理判断题。根据第三段Even without furher increases in prevalence，the impact of the epidemic will continue to mount for many years to come可推断，答案为C项。

　　答案：C

　　4．Which of the following groups has become obese in recent years according to the passage?

　　A．Blacks.

　　B．Females.

　　C．Whites.

　　D．Males.

　　解析：细节理解题。根据第五段For instance，men and boys have become fatter since 1999...可知，答案为D项。

　　答案：D

　　A French woman has taught her dogs to play the piano.In a new YouTube video，the dogs sit side by side at an oversize keyboard，perfectly pawing(用爪子扒)the keys in response to musical notes(音符)played by their owner，who accompanies them playing a flute.

　　It’s quite a unique skill.But what exactly is going on here？Charles Snowdon，a scientist at the University of WisconsinMadison who studies animals’responses to music and is at the top level in the study of how animals respond to“speciesspecific music”，said：“The dogs have been trained to do certain things after getting some signals given by their owner，which is different from memorization.She plays notes and my guess is what the dogs have done is learning the relationship between the notes their owner is playing and where they are supposed to put their paws.So，the dogs most likely can play the correct notes not because they understand which notes sound right，but they’ve been trained to respond to certain sounds of the flute by pressing certain keys on the piano.Or perhaps there are some secrets we can’t see in the video.”