7.Brain activity may continue for more than 10 minutes after the body appears to have died,according to a new study.
Researchers had previously thought that brain activity ends before or shortly after the heart stops beating.But a team of doctors affiliated with the University of Western Ontario in Canada has documented a case in which a patient continued to experience brain wave activity for about 10minutes after he had been announced clinically dead (or brain dead).
The unusual circumstance came about as the team in Canada was conducting routine research regarding the process of death in humans.As four terminal patients were removed from life support,their vital signs(生命體征) were monitored for a length of time.Three of the patients stopped sending brain signals almost immediately after their hearts stopped,but the fourth instead began producing signals that are normally seen in a person that is in a very deep sleep-delta waves-and continued to do so for 10minutes and 38seconds.
In the case,doctors confirmed their patient was dead through a range of the normal observations,including the absence of a pulse(脈搏) and unreactive pupils(瞳孔).They also conducted a series of tests to make sure all of the equipment was working fine.After finding no problems,they reported that they had no explanation for what they had observed.
Scientists not involved with the research are cautious to draw any sort of conclusions since the phenomenon only occurred in one of four test patients.
What happens to the body and mind after death remains almost entirely mysterious to scientists.Two other studies last year,for instance,showed that genes appeared to continue functioning-and even function more energetically-in the days after people die.
What?s really going on?That?s the rational question following this latest brain activity study.
32.Previously,brain activity was thought toA.
A.end as the heart stops.
B.last much longer than heart beat.
C.stop in a very deep sleep.
D.prevent genes functioning.
33.What was special about the fourth patient after death?B
A.His pupils made no reaction.
B.His brain waves were monitored.
C.He had no pulse already.
D.His life support wasn?t removed.
34.What?s the scientists?attitude towards this observation?C
A.Negative.B.Positive.C.Careful.D.Uninterested.
35.Why does the writer mention the other two studies done last year?D
A.To express dissatisfaction with the scientists?work.
B.To encourage scientists to do more brain studies.
C.To invite the readers to give more such examples.
D.To show brain activity after death remains a mystery.
分析 本文主要是研究了人的身體死了之后,大腦活動(dòng)可能會(huì)持續(xù)超過10分鐘后的這樣一種現(xiàn)象.
解答 32.A 推理判斷題.根據(jù)句子brain activity ends before or shortly after the heart stops beating在心臟停止跳動(dòng)之前或之后不久大腦的活動(dòng)結(jié)束.可以推斷出心臟停止跳動(dòng)大腦活動(dòng)停止,所以答案選A.
33.B 推理判斷題.根據(jù)句子 but the fourth instead began producing signals that are normally seen in a person that is in a very deep sleep-delta waves-and continued to do so for 10minutes and 38seconds但是第四個(gè)人開始產(chǎn)生一種信號(hào),這種信號(hào)通常出現(xiàn)在睡眠很深的人的身上,持續(xù)10分鐘38秒.可見第四個(gè)病人的大腦電波依然被監(jiān)控著的,所以答案選B.
34.C推理判斷題.Scientists not involved with the research are cautious to draw any sort of conclusions since the phenomenon only occurred in one of four test patients沒有參與這項(xiàng)研究的科學(xué)家謹(jǐn)慎地得出任何結(jié)論,因?yàn)檫@種現(xiàn)象只發(fā)生在四個(gè)試驗(yàn)病人中.可以推斷出科學(xué)家對(duì)于這件事是非常謹(jǐn)慎的.所以答案選C.
35.D 推理判斷題.根據(jù)句子What happens to the body and mind after death remains almost entirely mysterious to scientists.對(duì)科學(xué)家來說,死后身體和心靈的變化幾乎完全是神秘的.另外的兩個(gè)例子也是對(duì)這種神秘的研究,所以答案選D.
點(diǎn)評(píng) 推理判斷題要求在理解原文表面文字信息的基礎(chǔ)上,做出一定的推理判斷,從而得到文章的隱含意義和深層意義.推理判斷題所涉及的內(nèi)容可能是文中的某一句話,也可能是某幾句話,所以,推理題的答案只能是根據(jù)原文表面文字信息一步推出的答案:即對(duì)原文某一句話或某幾句話所作的同義改寫或綜合.推理判斷題的題干中通常含有infer,suggest,imply,conclude indicate等標(biāo)志性詞語. 這種題型主要包括細(xì)節(jié)判斷題、態(tài)度觀點(diǎn)推斷題、寫作意圖推斷題、文章出處判斷題和猜測(cè)想象推斷題.