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Read the following article and select the best answer. Article: 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 _ , it constructs a wider-meshed (, )web using fewer strands . 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 . 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. Question: A spider's ability to finish an incomplete web proves that _ . - it has a highly preprogrammed brain - it reuses its web protein to reproduce new silk - the web is everything for a spider - it is able to rebuild a destroyed web
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it has a highly preprogrammed brain

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Read the following article and select the best answer. Article: I had an experience some years ago, which taught me something about the ways in which people make a bad situation worse by blaming themselves.One January, I had to hold two funerals on successive days for two elderly women in my community.Both had died "full of years", as the Bible would say.Their homes happened to be near each other, so I paid condolence calls on the two families on the same afternoon. At the first home, the son of the deceased woman said to me, "If only I had sent my mother to Florida and gotten her out of this cold and snow, she would be alive today.It's my fault that she died." At the second home, the son of the other deceased woman said, "If only I hadn't insisted on my mother's going to Florida, she would be alive today.That long airplane ride, the sudden change of climate, was more than she could take.It's my fault that she's dead." You see that any time there is a death, the survivors will feel guilty.Because the course of action they took turned out badly, they believe that the opposite course -- keeping Mother at home, putting off the operation -- would have turned out better.After all, how could it have turned out any worse? There seem to be two elements involved in our willingness to feel guilty. _ .That leads us to find patterns and connections both where they really exist and where they exist only in our minds. The second element is the view that we are the cause of what happens, especially the bad things that happen.It seems to be a short step from believing that every event has a cause to believing that every disaster is our fault.The roots of this feeling may lie in our childhood. A baby comes to think that the world exists to meet his needs, and that he makes everything happen in it.He wakes up in the morning and summons the rest of the world to its tasks.He cries, and someone comes to attend to him.When he is hungry, people feed him, and when he is wet, people change him.Very often, we do not completely outgrow that childish view that our wishes cause things to happen. Question: What's the main idea of the passage? - Life and death is an unsolved mystery. - Every story should have a happy ending. - Never feel guilty all the time because not every disaster is our fault. - In general, the survivors will feel guilty about the people who passed away .
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Never feel guilty all the time because not every disaster is our fault.

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Read the following article and select the best answer. Article: "Hi,howareya." some people say when they see a familiar face.The words run together into a mass,all sense and meaning lost. All the same,people do care how you are.After they greet you,it's likely you will greet them back,with an equally meaningless phrase like,"Can't complain,can't complain."You could probably complain,at length,or share a brilliant thought you were just beginning when a greeting interrupted you.You don't though,you say,"Great,you?" You are not giving each other information about your health and wellbeing.All the same,you are sharing information.You're acknowledging each other's positions as acknowledged friends,or at least as accepted acquaintances.And you are reestablishing the ties that may have lapsed since yesterday,when you last met at the elevator or the entrance to the train station. It's what anthropologist Bronislaw Malinoski called a phatic communication.Its message is not in the words you use,but in the fact that you speak ritually accepted words.In Asia,for example,people may ask one another if they have eaten,or if they are busy.They're not really asking for their lunch menu or their agenda,they are saying hello.A phatic signal merely says, "I see you there." It says hi. There's embarrassment of being near people without acknowledging them.That uncomfortable feeling is one reason why lonely passengers in the subway may behave as if they cannot see anyone around them or may escape their uncomfortable situation with a book.Some people read all the way home,and never turn a page. Your friend isn't asking how you are,and you aren't telling him.However,he is recognizing your existence,and when you answer,you are recognizing his.In addition,the set speech you have shared opens the door to closer communications if both agree.Someday,you may come to real close friendship,and really tell one another how you are. Meanwhile,people who greet one another this way do care.They care enough to recognize someone's essential humanity .They send a signal across the space between,to share,very... Question: What does the text mainly tell us? - Greetings should be given better expressions. - Greetings convey different meanings to different people. - Greetings help prove an individual's social independence. - Greetings help an individual be connected with the society.
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Greetings help an individual be connected with the society.