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
Spiders Spiders can be distinguished from other Arachnids because the prosoma (combined head and thorax) is only separated f
Spiders Spiders can be distinguished from other Arachnids because the prosoma (combined head and thorax) is only separated f
admin
2013-06-17
24
问题
Spiders
Spiders can be distinguished from other Arachnids because the prosoma (combined head and thorax) is only separated from the opisthosoma (abdomen) by a narrow waist, in other Arachnids the whole body appears to be much more of a single unit. All spiders produce silk, but only some construct webs to catch their homes and to protect their eggs.
All spiders possess poison glands but very few of them are dangerous to humans, of the 600+ species in Britain only 12 (at least one of these is a recent human assisted colonist) are strong enough to pierce the human skin, and apart from allergies, none are more dangerous than a common wasp. Most spiders have 8 eyes (though some have 6, 4, 2 or 0), as well as 8 legs. (by the way if you count the claws as separate leg section [which you shouldn’t really] then their legs have 8 parts as well [coxa, trochanter, femur, patella, tibia, tarsus, metatarus, claws]) There are more than 32000 known species of spider in the world. No human being has ever been officially recorder as having died as the result of a ’tarantula’ bite.
All spiders are carnivorous and feed only on liquids, i.e. their preys natural juices and the breakdown products of external digestion (meaning they spit, exude or inject digestive juices onto/into their prey and suck up the resulting soup). So why not invite some to your next social do?
What’s In a Name
The word ’Arachnida’ comes from the Greek word ’Arachne’ who was the daughter of Idmon of Colophon in Lydia, a dyer by trade. Arachne herself was a weaver, the best in all the known world. However in a foolish moment she challenged Athena, the daughter of Zeus and goddess of, among other things, waving to a weaving competition. Arachne wove so perfect a cloth that she tore it to shreds. Arachne became depressed after this and in the end she hung herself. Athena stirred to remorse at the knowledge of what her anger had wrought turned the rope Arachne had used to hang herself into a web and Arachne herself into a spider so that the beauty of her spinning should not be lost to the world ever again.
The Great Household Spider Safari
There are just over six hundred different sorts of spider in the British Isles. But of these only ’a handful are commonly found in houses. At the front of the head are a pair of what appear to be small legs. These are called palps and are used to guide food to the spider’s mouth. The front of the head also has a group of six or eight eyes. On the underside of the body at the rear, are four or six small conical bumps or cylinders. There are the spinnerets from which the spider produces the silk to make its webs.
Telling male and female spiders apart is easily done by looking at their palps. Males have swollen ends to their palps which makes them look as if they are wearing boxing gloves, these are often strange shapes if looked at with a hand lens. Females have normal looking palps that are not swollen at the ends.
The largest spider is the Goliath spider, the female of which grows to reach a leg span of ten inches, The largest spider in Britain is the Cardinal spider which is a close cousin of Tim Tegenaria. Females can achieve a leg span of four and a half inches. It is known as the Cardinal spider as it was common in Hampton Court when Cardinal Wolsey lived there. The sight of these long legged spiders wandering around the palace at night used to frighten him. So far 32000 different kinds of spider have been discovered from all over the world. Britain has 630 different kinds of spider of which 250 are tiny Money spiders. The smallest of which has a body less than one millimeter long.
The largest spider is ______.
选项
答案
the Goliath spider
解析
扫读全文的时候注意有最高级的地方。由此我们可以将该题定位在文章最后一段的首句。
转载请注明原文地址:https://kaotiyun.com/show/jWM7777K
0
大学英语四级
相关试题推荐
CustomsofficersataLondonairportyesterdayfound500,000poundsworthofdrugswhichwerebeingsmuggled(走私)intoBritainin
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【B1】______ChristopherColumbus.Hethoughthe
A、Heisfeelingcoldnow.B、Heisintheofficenow.C、Hemayworktoohard.D、Hehasapainonhisleg.C对话中男士说他感觉很不好,颈部疼痛并且无法睡
Thereismuchdiscussiontodayaboutwhethereconomicgrowthisdesirable.Atanearlierperiod,ourdesireformaterialwealth
A、Teacherandstudent.B、Classmates.C、Ex-husbandandwife.D、Colleagues.B
Insurancecompaniesprovideaservicetothecommunitybyprotectingitagainstexpectedandunexpecteddisasters.Beforeanins
A、Becausethevolcanobeganon14thNovember1963.B、Becausetheydidn’tstopuntilJune1967—fouryearslater.C、Becausetheyw
A、Thetwospeakersareatalossaboutwhattodo.B、Themanisworriedabouthisfuture.C、Thetwospeakersareseniorsatcoll
A、ShehasneverbeentoGettysburg.B、Shetookapoliticalsciencecourse.C、Herfamilystillgoesonvacationtogether.D、She’s
A、Thereisnoroomforthem.B、Theyaredismissedfromschool.C、Theyaredistributedinanewdorm.D、Theyneedtorentanapar
随机试题
船闸主体土工膜防渗施工中,大幅土工膜拼接,采用胶接法黏合时,搭接宽度宜为()。
女,36岁,主诉头晕、乏力,3年来月经量多,浅表淋巴结及肝、脾无肿大,血红蛋白58g/L,白细胞8.0×109/L,血小板:185×109/L,血片可见红细胞中心淡染区扩大,网织红细胞计数0.005。明确诊断需做的检查应除外哪项
患者,男,28岁,上腹部受汽车撞伤2小时后,面色苍白,四肢湿冷,血压70/40mmHg,心率138次/分,估计患者失血量是
下列各项中,哪个依法享有对直辖市的中级人民法院院长任免权?()
下列施工成本管理的措施中,属于技术措施的有()。
A股份有限公司(以下简称A公司)属于增值税一般纳税人,A公司2018年度发生的有关交易或事项资料如下:(1)以盈余公积转增资本1000万元。(2)以盈余公积补亏500万元。(3)计提法定盈余公积100万元,计提任意盈余公积50万元。(4)宣告发放
θ是总体的一个待估参数,θL,θU是其对于给定α的1一α的置信下限与置信上限。则1一α置信区间的含义是()。
定义:①音高是指人感觉声音调子高低的程度。②音色是指乐器或嗓音等由于质地不同而形成的音质。③音强是指人耳所感觉到的声音的大小。典型例证:(1)乐曲的高低起伏(2)小提琴和钢琴的声音(3)
下列哪一个与数据库日志无关
A、French.B、Italian.C、Ranch.D、Germany.C细节题。四个选项都是关于沙拉调料的。女士选择了Ranch,因此选项C为正确答案。
最新回复
(
0
)