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托福听力短文 II-05-2

时间:2009-01-13 00:15来源:互联网 提供网友:lanmengxue98   字体: [ ]
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    (单词翻译:双击或拖选)
(MA) Today I want to talk to you about wasps1 and their nests. You'll recall that biologists divide species of wasps into two groups: solitary2 and social.

Solitary wasps, as the name implies, do not live together with other wasps. In most species the male and female get together only to mate, and then the female does all the work of building the nest and providing food for the offspring by herself. Solitary wasps usually make nests in the ground and they separate the chambers3 for individual offspring with bits of grass, stone, or mud, whatever is handy.

What about social wasps? They form a community and work together to build and maintain the nest. A nest begins in the spring when a fertile female, called the queen, builds the first few compartments4 of the nest and lays eggs. The first offspring are small females that cannot lay eggs. These females, called workers, then build a lot of new compartments, and the queen lays more eggs. They also care for the new offspring and defend the nest with their stingers. By the way, only female wasps have stingers.

Most social wasps make nests of paper. The females produce the paper by chewing up plant fibers5 or old wood. They spread the paper in thin layers to make cells in which the queen lays her eggs. Most of you, I'm sure, have seen these nests suspended from trees. They may also be built underground in abandoned rodent6 burrows7.

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1 wasps fb5b4ba79c574cee74f48a72a48c03ef     
黄蜂( wasp的名词复数 ); 胡蜂; 易动怒的人; 刻毒的人
参考例句:
  • There's a wasps' nest in that old tree. 那棵老树上有一个黄蜂巢。
  • We live in dread not only of unpleasant insects like spiders or wasps, but of quite harmless ones like moths. 我们不仅生活在对象蜘蛛或黄蜂这样的小虫的惧怕中,而且生活在对诸如飞蛾这样无害昆虫的惧怕中
2 solitary 7FUyx     
adj.孤独的,独立的,荒凉的;n.隐士
参考例句:
  • I am rather fond of a solitary stroll in the country.我颇喜欢在乡间独自徜徉。
  • The castle rises in solitary splendour on the fringe of the desert.这座城堡巍然耸立在沙漠的边际,显得十分壮美。
3 chambers c053984cd45eab1984d2c4776373c4fe     
n.房间( chamber的名词复数 );(议会的)议院;卧室;会议厅
参考例句:
  • The body will be removed into one of the cold storage chambers. 尸体将被移到一个冷冻间里。 来自《简明英汉词典》
  • Mr Chambers's readable book concentrates on the middle passage: the time Ransome spent in Russia. Chambers先生的这本值得一看的书重点在中间:Ransome在俄国的那几年。 来自互联网
4 compartments 4e9d78104c402c263f5154f3360372c7     
n.间隔( compartment的名词复数 );(列车车厢的)隔间;(家具或设备等的)分隔间;隔层
参考例句:
  • Your pencil box has several compartments. 你的铅笔盒有好几个格。 来自《简明英汉词典》
  • The first-class compartments are in front. 头等车室在前头。 来自《简明英汉词典》
5 fibers 421d63991f1d1fc8826d6e71d5e15f53     
光纤( fiber的名词复数 ); (织物的)质地; 纤维,纤维物质
参考例句:
  • Thesolution of collagen-PVA was wet spined with the sodium sulfate as coagulant and collagen-PVA composite fibers were prepared. 在此基础上,以硫酸钠为凝固剂,对胶原-PVA共混溶液进行湿法纺丝,制备了胶原-PVA复合纤维。
  • Sympathetic fibers are distributed to all regions of the heart. 交感神经纤维分布于心脏的所有部分。
6 rodent DsNyh     
n.啮齿动物;adj.啮齿目的
参考例句:
  • When there is a full moon,this nocturnal rodent is careful to stay in its burrow.月圆之夜,这种夜间活动的啮齿类动物会小心地呆在地洞里不出来。
  • This small rodent can scoop out a long,narrow tunnel in a very short time.这种小啮齿动物能在很短的时间里挖出一条又长又窄的地道来。
7 burrows 6f0e89270b16e255aa86501b6ccbc5f3     
n.地洞( burrow的名词复数 )v.挖掘(洞穴),挖洞( burrow的第三人称单数 );翻寻
参考例句:
  • The intertidal beach unit contains some organism burrows. 潮间海滩单元含有一些生物潜穴。 来自辞典例句
  • A mole burrows its way through the ground. 鼹鼠会在地下钻洞前进。 来自辞典例句
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TAG标签:   托福听力  托福短文
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