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
83
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.
Tim Tegenaria spiders are closely related to tarantula spiders; both are found in Britain.
选项
A、Y
B、N
C、NG
答案
C
解析
文章中只出现过一次Tim Tegenaria,所以该题很好定位,即最后一段的第二句。可是文章中并没有出现tarantula spiders。
转载请注明原文地址:https://kaotiyun.com/show/yWM7777K
0
大学英语四级
相关试题推荐
Spaceisfilledwithradiantenergyandbeyondearth’satmospherethisenergyflowsteadilyandintenselyfromthesun.Anabund
Whatcausesmentopursuetopmanagement?Psychologistsoncebelievedthatthe【C1】______thatcausedmentostrivetoattainhi
Thereismuchdiscussiontodayaboutwhethereconomicgrowthisdesirable.Atanearlierperiod,ourdesireformaterialwealth
Thestudyofsignlanguageisthoughttobe______.MosteducatorsobjectedtoStokoe’sideabecausetheythought______.
Whathesaidjustnow____________(与问题几乎不相干)underdiscussion.
Whentheysawthepileofpaperontheteacher’sdesk,theclassmadethe______thattheywouldhavewrittenwork.
A、Dislikeandhatred.B、Morefreedomandmoremoney.C、Educationsystem.D、Livinginlargetowns.C题目询问以下哪一项说话人不认为是青少年犯罪的原因。这道题考
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdiscriminationandtryingtofindadecentjob--espec
Whatispopculture?Well,popis【11】forpopular.Thebeginningofpopculturecanoftenberelatedtopopularmovies,televisio
Bobmissedthelastbusandwasreadytowalkallthewayhomewhenavan______besidehim.
随机试题
当证券市场价格因经济因素、政治因素等各种因素的影响而产生波动时,将导致基金收益水平和净值发生变化,从而给基金投资者带来风险,这种风险指的是__________。
下列药物,不需去心的是
罗红霉素的鉴别试验头孢羟氨苄的鉴别试验
第一手统计数据的主要来源有()。
已知U={y|y=log2x,x>1},P={y|y=,x>2},则CUP=()
根据以下资料,回答下列题。根据所给的材料,不能得出的结论是()。
根据下列统计资料回答问题。受移动商务应用规模化增长、企业加大补贴力度、政府有条件放开等有利因素驱动,2014—2015年,网络约租车市场进入快速发展时期。2015年上半年,网络预约出租车用户规模为9664万人,在使用各种叫车服务软件的用户群体中占
设计一个名为mysupply的表单,表单的控件名和文件名均为mysupply。表单的形式如下图所示。表单标题为“零件供应情况”,表格控件为Grid1,命令按钮“查询”为Command1、“退出”为Command2,标签控件Label1和文本框控
若有以下程序:#include<iostream>usingnamespacestd;classBase{public:voidwho(){cout<<"Base"<<end1;}};classDerivedl:publi
•Readthetextbelowabouthowtoorderproducts.•Inmostofthelines41—52thereisoneextraword.Itiseithergrammaticall
最新回复
(
0
)