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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, 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. 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, it constructs a wider-meshed （網(wǎng)孔、網(wǎng)眼）web using fewer strands（線）. Such webs would only trap larger prey, which is more economical from the perspective of a starving spider. The spider stores energy by recycling web protein. It simply eats its own web each evening and reuses it to produce new silk. In studies with radioactivity, labeled materials, it was found that 95 percent of web protein reappears in the next day web. Most of the energy needed for web-building is used in walking over the strands as they are laid down. Scientists are impressed by the adaptability of the spider's highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate（無脊推動物）. If web-building is interrupted, or if some of the existing strands are destroyed, the spider simply goes back to see where the web is left off and then finishes building a normal web. One spider will finish building the incomplete web of another.
小題1:Which of the following best expresses the main ideas of the passage?

A．Secrets of Spiders' Adaptability

B．Importance of Webs to Spiders

C．Secrets of the Spiders' Life

D．Spiders' Highly Preprogrammed Brain

小題2:According to the passage, which of the following statements is TRUE?

A．Most spiders will stop conducting webs when hungry.

B．One Web-building spider usually conducts one web.

C．Web-building spiders will probably die without their webs.

D．Web-building spiders have good eyesight.

小題3:The underlined word “scrawnier” in the second paragraph probably means ______.

A．weaker but good-looking

B．fatter and stronger

C．nice and healthier

D．thinner and bony

小題4:A spider's ability to finish an incomplete web proves that ______.

A．it has a highly preprogrammed brain

B．it reuses its web protein to reproduce new silk

C．the web is everything for a spider

D．it is able to rebuild a destroyed web

小題1:B
小題2:C
小題3:D
小題4:A

試題分析：文章大意：講述蜘蛛和網(wǎng)之間的關(guān)系。
小題1:B主旨大意題：根據(jù)句首第一句：To many web-building spiders, most of whom are nearly blind, the web is their essential window on the world: theirmeans of communicating, capturing prey, 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. 對許多織網(wǎng)的蜘蛛來說，他們大部分幾乎是瞎子，網(wǎng)是他們在世界上必須的東西：他們交流，捕捉獵物，會見同伴，自我保護的的方式。
小題2:C 細節(jié)理解：根據(jù)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. 一個沒有網(wǎng)的蜘蛛就像一個被扔在荒石島上的人，完全與人失去聯(lián)系，注定要餓死。所以選C。沒有網(wǎng)的話，蜘蛛很可能會死掉。
小題3:D 詞義猜測：根據(jù)前文For 16 days the starving spider builds completely normal webs. 饑餓的蜘蛛16天的時間會織造完整的正常的蛛網(wǎng)。和后句Such webs would only trap larger prey, which is more economical from the perspective of a starving spider. 這樣的網(wǎng)只用來捕捉提醒大些的獵物，這樣做，從一只饑餓的蜘蛛的角度來說更加合算。所以推測出更瘦的，骨瘦如柴的。
小題4:A 細節(jié)理解根據(jù)Scientists are impressed by the adaptability of the spider's highly preprogrammed brain,蜘蛛的高度預編好的大腦的適應性給科學家們留下了深刻印象。下面用蜘蛛能修補好蜘蛛網(wǎng)為例證明這個論點。反之，蜘蛛能修補好蜘蛛網(wǎng)證明了蜘蛛有高度預編的大腦的論點。

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A．Meat-eating plants look and act like other green plants.

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