首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Running a fever was once thought to be the prerogative of warm-blooded creatures, whose internal temperatures are independent of
Running a fever was once thought to be the prerogative of warm-blooded creatures, whose internal temperatures are independent of
admin
2010-07-06
62
问题
Running a fever was once thought to be the prerogative of warm-blooded creatures, whose internal temperatures are independent of the weather. But, as Matthew Kluger reported in "The Importance of Being Feverish" January 1976, lizards can also develop fevers, even though there is no question that they are cold-blooded. They raise their temperatures by moving into the sun or, in the case of Kluger’s experiments, under a sun lamp. And it seems to do them some good. Sick lizards kept in cages at feverish temperatures fare much better than their counterparts in normal and cool environments.
Now ,fever has spread to invertebrates(无脊椎动物). Recent studies have shown that crayfish and scorpions can develop fevers. Crayfish injected with bacteria and scorpions injected with prostaglandins (前列腺素)swam and scuttled to hot areas. Prostaglandins are hormones thought to be instrumental in the development of a fever.
Evidence is also mounting that moderate fevers have their benefits, which might explain why the fever process is so widespread. Leukocytes, white blood cells that are active in fighting bacterial infections, are more mobile at febrile temperatures. And fevers reduce the amount of iron available to bacteria. That reduction, combined with high temperatures, has been shown to inhibit bacterial growth.
The passage implies that______.
选项
A、the fever process is widespread because moderate fevers have benefits
B、the reduction of fevers can inhibit bacterial growth
C、man can use sun lamp to raise lizards’ temperature
D、crayfish injected with bacteria have a purpose for moving to hot areas
答案
D
解析
从文中第二段“Crayfish injected…to hot areas.”可知D 正确。
转载请注明原文地址:https://kaotiyun.com/show/oyDd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Childrenwhogriptheirpenstooclosetothewritingpointarelikelytobeatadisadvantageinexaminations,【C1】________toth
Childrenwhogriptheirpenstooclosetothewritingpointarelikelytobeatadisadvantageinexaminations,【C1】________toth
Thebestestimateofhumanity’secologicalfootprintsuggeststhatitnowexceedstheEarth’sregenerativecapacitybyaround20
Duetohistoricalreasons,peopleintheCzechRepubliclacked________.Themobileoperatorsagreedtochargeonlytherunning
ThespeakerthinksthattobeateacherismoredifficultthantobethepresidentoftheNEA.Thespeakerthoughthedidther
Emmagrewupinafamilywithasailingtradition.Thethoughtofdeathneveroccurredtoherduringtheentirerace.
Walking—likeswimming,bicyclingandrunning—isanaerobicexercise,【C1】________buildsthecapacityforenergyoutputandphysi
Walking—likeswimming,bicyclingandrunning—isanaerobicexercise,【C1】________buildsthecapacityforenergyoutputandphysi
Walking—likeswimming,bicyclingandrunning—isanaerobicexercise,【C1】________buildsthecapacityforenergyoutputandphysi
Industrialsafeoperationhaslongbeenamatterofconsiderableconcernofourgovernment.Hove-ever,theoccurrenceofacciden
随机试题
男性,60岁,阵发性腹痛伴频繁呕吐.停止排气、排便8小时入院。2年前因十二指肠溃疡穿孔行胃大部切除术,查体:腹稍胀,上腹部压痛。最可能的诊断是
下列哪项不是喘证特征:
手术操作中86.6:游离皮肤移植术,具有双分类轴心。其中异体、同种、人造皮肤属于
青霉素类的抗菌机制是
一女咨询者,35岁,某大学教师。3个月前因出国问题与领导争吵,而后逐渐表现出情绪低落、兴趣减退,对未来悲观失望,认为领导和同事都疏远她,常有怨天尤人的表现。能主动求医,接触良好。针对此例,在心理评估上宜采用
盐酸氯胺酮化学结构中含有
房屋拆迁实施过程中,违法建筑应由()认定。[2008、2004年考试真题]
[背景资料]某工程项目难度较大,技术含量较高,经有关招投标主管部门批准采用邀请招标方式招标。业主于2001年1月20日向符合资质要求的A、B、C三家承包商发出投标邀请书,A、B、C三家承包商均按招标文件的要求提交了投标文件,最终确定B承包商中标,并
()不属于民用危险物品。
设循环队列的存储空间为Q(1:35),初始状态为front=rear=35。现经过一系列入队与退队运算后,front=15,rear=15,则循环队列中的元素个数为
最新回复
(
0
)