【文章內(nèi)容簡(jiǎn)介】 a widermeshed web using fewer strands（線）.Such webs would only trap larger prey, which is more economical from the perspective of a starving controlpanelThe spider stores energy by recycling web simply eats its own web each evening and reuses it to produce new studies with radioactively，labeled materials, it was found that 95 percent of web protein reappears in the next day39。 of the energy needed for webbuilding is used in walking over the strands as they are laid down．by controlpanelScientists are impressed by the adaptability of the spider39。s highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate（無(wú)脊推動(dòng)物）．If webbuilding 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 spider will finish building the inplete web of controlpanel title that would best express the main idea of the passage would of of the Web of Nature New Discovery of Scientists to the passage which of the following statements is true webbuilding spiders are blind spiders are blind a small part of webbuilding spiders can spiders can weave its web a webbuilding spider would NOT be able quickly the prey clearly its energy spider conserves its it constructs new webs daily it walks over the strands it lays eating its own web protein and then reusing it in the new web eating only in the evening a spider is able to finish an inplete web of another proves spider reuses its web energy to reproduce new silk have a highly preprogrammed brain web is everything to a spider spider is able to remedy a destroyed web.(B)出自1997年1月托福閱讀全真試題Large animals that inhabit the desert have evolved a number of adaptations for reducing the effects of extreme adaptation is to be light in color, and to reflect rather than absorb the Sun’s mammals also depart from the normal mammalian practice of maintaining a constant body of trying to keep down the body temperature deep inside the body, which would involve the expenditure of water and energy, desert mammals allow their temperatures to rise to what would normally be fever height, and temperatures as high as 46 degrees Celsius have been measured in Grant’s overheated body then cools down during the cold desert night, and indeed the temperature may fall unusually low by dawn, as low as 34 degrees Celsius in the is an advantage since the heat of the first few hours of daylight is absorbed in warming up the body, and an excessive buildup of heat does not begin until well into the controlpanel Another strategy of large desert animals is to tolerate the loss of body water to a point that would be fatal for nonadapted camel can lose up to 30 percent of its body weight as water without harm to itself, whereas human beings die after losing only 12 to 13 percent of their body equally important adaptation is the ability to replenish this water loss at one animals can drink prodigious volumes in a short time, and camels have been known to imbibe over 100 liters in a few very dehydrated person, on the other hand, cannot drink enough water to rehydrate at one session, because the human stomach is not sufficiently big and because a too rapid dilution of the body fluids causes death from water tolerance of water loss is of obvious advantage in the desert, as animals do not have to remain near a water hole but can obtain food from grazing sparse and farflung mammals have the further ability to feed normally when extremely dehydrated, it is a mon experience in people that appetite is lost even under conditions of moderate controlpanel is the main topic of the passage?(A)Weather variations in the desert(B)Adaptations of desert animals(C)Diseased of desert animals(D)Human use of desert to the passage, why is light coloring an advantage to large desert animals?(A)It helps them hide from predators.(B)It does not absorb sunlight as much as dark colors.(C)It helps them see their young at night(D)It keeps them cool at author uses of Grant’s gazelle as an example of(A)an animal with a low average temperature(B)an animal that is not as well adapted as the camel(C)a desert animal that can withstand high body temperatures(D)a desert animal with a constant body temperature does the author imply about desertadapted mammals?(A)They do not need to eat much food.(B)They can eat large quantities quickly(C)They easily lose their appetites.(D)They can travel long distances looking for does the author mention humans in the second paragraph?(A)To show how they use camels.(B)To contrast them to desert mammals.(C)To give instructions about desert survival.(D)To show how they have adapted to desert life.(C)關(guān)于旅游能擴(kuò)展思路（原文沒(méi)找到）(D)出自四川理工學(xué)院大學(xué)英語(yǔ)試卷Proper arrangement of classroom space is important to encouraging of us have noticed how important physical setting is to efficiency and fort in our classroom space should be designed to encourage the activity of critical controlpanel We may be approaching the twentyfirst century, but step into almost any college classroom and you step back in time at least a hundred are normally in straight row, so students can clearly see the teacher but not all their assumption behind such an arrangement is of importance es from the controlpanel With a little imagination and effort, unless desks are fixed to floor, the teacher can correct this situation and create space that encourage interchange among small or standardsize classes, chairs, desks, and tables can be arranged in a variety of primary goal should be for everyone to be able to see everyone classes, particularly those held in lecture halls, unfortunately, allow much less of the classroom should also make it easy to divide students into small groups for discussion or problemsolving classes with movable desks and tables present no in large lecture halls, it is possible for students to turn around and form grou