南開08英語真題

(A) 出自北京海淀區07年高三11月月考英語卷
To many web-building spiders, most of whom are nearly blind, the web is their essential window on the world: their means of communicating, capturing prey（獵物）, meeting mates and protecting themselves. A web-building spider without its web is like a men cast away on an island of solid rock，totally out of touch and destined to starve to death. by controlpanel

So important is the web to an orb-web spider's survival that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely normal webs. Then, as the animal gets scrawnier（憔悴的）， it constructs a wider-meshed web using fewer strands（線）. Such webs would only trap larger prey, which is more economical from the perspective of a starving spider. by controlpanel