20142015学年度高中英语（人教版）同步课堂资源选修六Unit4Globalwarming课时作业.docVIP

第  PAGE 6 页 共  NUMPAGES 6 页 课时作业29 Ⅰ.完形填空 (2013·宁夏模拟)Almost everyone wants to get smarter.We struggle to improve our __1__，intelligence and attention.We drink cup after cup of coffee to help us __2__ the day. __3__，a new study published in Current Directions in Psychological Science warns that there are __4__ to how smart humans can get. Each of our body parts develops in a certain way for a reason.__5__，we are not 3 meters tall __6__ most peoples hearts are not strong enough to send __7__ up that high.Scientists say that our thinking ability works in the same way.A babys brain size is limited by a series of __8__，such as the size of the mothers pelvis (骨盆)．If our brains developed to be bigger，there could be more __9__ during childbirth. The study of Jews，who have an average IQ much __10__ than other Europeans，showed they were more __11__ to develop diseases of the __12__ system.This might be because of their increased brainpower. If intelligence cannot be improved，can we at least get better at __13__？ Not really，say scientists.They studied __14__ like caffeine (咖啡因)that improve attention.They found the drugs only helped people with serious __15__ problems.For those who did not have trouble paying attention，the drugs could have the __16__ effect.Scientists say that this suggests there is a(n) __17__ limit to how much people can or should concentrate. Our memory is also a “double-edged sword”．People with extremely good memories could __18__ having a difficult life because they cannot __19__ bad things that happen to them. Thomas Hills，one of the authors of the paper，said that __20__ all the problems in trying to get smarter，its unlikely that there will ever be a “super mind”． [文章大意]几乎每个人都想变得更加聪明，然而科学家却发现人的聪明是有限度的。 1．A.ability　　　　　　　 B．character C．memory D．emotion 解析：对应后文信息：intelligence and attention可知，此处指我们努力提高自己的记忆力(memory)。“ability”能力；“character”性格；“emotion”情感。 答案：C 2．A.go through B．put through C．get through