更多"To many web-building spiders, most "的相关试题:
[填空题]To many web-building spiders, most of whom are nearly blind, the web is their S36 ______ window on the world, their means of communicating, S37 ______ prey, meeting mates and protecting themselves. A web-building spider without its web is like a man on an island of solid rock, totally nut of touch and S38 ______ to starve to death.
So vital is the web to a spider’ s S39 ______ that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely S40 ______ webs. Then, as the animal gets thinner, it constructs a wider-meshed (风眼较大的) web using fewer strands. Such webs would only trap larger prey, which is more S41 ______ from the S42 ______ of a starving spider.
The spider conserves energy by recycling web protein. S43 ______ .In studies with radioactively labeled materials, it was found that 95 percent of web protein reappears in the next day’s web. S44 ______.
Scientists are impressed by the adaptability
[单项选择]Spiders of many species change color to match the pigmentation of the flowers they sit on. The insects preyed on by those spiders, unlike human beings, possess color discrimination so acute that they can readily see the spiders despite the seeming camouflage. Clearly, then, it must be in evading their own predators that the spiders’ color changes are useful to them.
Which of the following, if tree, most strengthens the argument
A. Among the animals that feed on color-changing spiders are a few species of bat, which find their prey through sound echoes.
B. Certain animals that feed on color-changing spiders do so only sparingly in order to keep from ingesting harmful amounts of spider venom.
C. Color-changing spiders possess color discrimination that is more acute than that of spiders that lack the ability to change color.
D. Color-changing spiders spin webs that are readily seen by the predators of those spiders.
E. (E) The color discrimination of certain birds that feed on color-changing spiders is no more acute than that of human beings.
[单项选择]（）, most of whom were women and children.
A. On the beautiful ship are over 2200 people
B. On the beautiful ship were over 2200 people
C. Over 2200 people are on the beautiful ship
D. On the beautiful ship had over 2200 people
[单项选择]For whom does the speaker most likely work
A. A shipping company
B. A kitchen appliance store
C. A coffee bean producer
D. An office supply chain
[单项选择]For whom is this speech most likely intended
A. Priests
B. Potential patients
C. Photographers
D. Facility administrators
[单项选择]
Children for whom school has no point
Many children do not go to school either because their parents want them at home as carers for siblings, or simply because their parents cannot be bothered to send them. Thousands more are not registered at any school at all, because of their families’ unstable lives.
Underlying this dreadful situation there are two central truths. First of all, the problem of children not going to school often has more to do with their parents than with the children themselves. Secondly, once children go to school, we need to make sure that the experience is a positive one so that they want to keep on going.
In Britain, the Ministry of Education has introduced a complex package of sticks and carrots to persuade schools to bring truants’ and excluded children back into the classroom. It is paying grants so that a thousand schools can set up special units to help these children. Schools receive the grant if
A. that people feel very emotional
B. that parents worry their children at school
C. that these children think education is a waste of time
D. that there are not enough police to pick up truants on the streets
[单项选择]Many of the people who appear most often and most gloriously in history books are great conquerors and generals and soldiers, whereas the people who really helped civilization forward are often never mentioned at all.
We do not know who first set a broken leg, or launched a seaworthy boat, or calculated the length of the year; but we know all about the killers and destroyers. People think a great deal of them, so much so that on all the highest pillars in the great cities of the world you will find the figure of a conqueror or a general or a soldier. And I think most people believe that the greatest countries are those that have beaten in battle the greatest number of other countries and ruled over them as conquerors.
It is just possible they are, but they are not the most civilized. Animals fight; so do savages; hence to be good at fighting is to be good in the way in which an animal or a savage is good, but it is not to be civilized. Even being good at getting other people
A. should not have any quarrels to settle
B. should not fight when there are no quarrels to settle
C. should settle their quarrels without fighting
D. should settle their quarrels by killing the other side
