题目
题型：不详难度：来源：
Butterflies have large compound eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a sea of flowers than individual plants. Butterflies do not “see” colors such as red, green, and yellow, but they can sense sunlight, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to honey sources.
Butterflies have a very well-developed sense of smell, but it is not in their nose, since they don"t have one. Sense receptors are located in their antennae, feet, and many other parts of the body. They can help butterflies find their favorite flower honey food, and mates.
Butterflies" feet have sense organs that can taste the sugar in flower honey, letting the butterflies know if something is good to eat or not. Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs. Adult butterflies feed their babies using a long tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.
Butterflies don"t have ears. Instead they “hear” sounds through their wings by sensing changes in sound vibrations.
Butterflies may possess senses we don"t even know about yet, because their body structure is very different from ours, and therefore difficult to understand, when observed through our own human senses.
小题1:The text mainly focuses on ________.
| A．butterflies" living habits | B．butterflies" beauty |
| C．butterflies" senses | D．butterflies" daily activities |
| A．Butterflies can see in all directions and don"t need to turn heads. |
| B．Butterflies have good eyesight. |
| C．Butterflies are sensitive to bright colors including red and yellow. |
| D．Butterflies cannot sense the ultraviolet light. |
| A．To find highqualified honey. |
| B．To have a good place for living. |
| C．To make it easier for them to hide from the enemies. |
| D．To find a proper place for their eggs. |
答案
小题1:C
小题2:A
小题3:D
解析
试题分析：文章介绍了蝴蝶的各种感觉，包括每种感觉器官的功能和作用。
小题1:主旨题：题目的意思是“文章主要专注于什么？”。在文中第一句话“Butterflies have large compound eyes, which allow them to see in all directions without turning their heads.可以体现出来，说明这篇文章主要讲的是蝴蝶的感觉，因此选C。
小题2:细节题：题目的意思是“我们从第二段了解到什么?”第二段的最后一句话“Such an inverted status display is most likely to occur where the person’s high status is conveyed in ways other than with clothing, such as having a famous face.”可知蝴蝶可以看见四面八方，不用转动头，选A。
小题3:细节题：题目的意思是“为什么雌蝴蝶仔细选择植物?”根据第四段的句子：Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs.可知她们是想找一个适当的地方产卵，答案是D。
核心考点
试题【Butterflies are some of the most fascinating and beautiful insects in the world.】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
But after a careful check you may find that most energy drinks have lots of caffeine(咖啡碱)in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much. Caffeine makes your heart beat fast. Because of this, the International Olympic Committee(IOC)（国际奥委会） has limited its use. Caffeine in most energy drinks is at least as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be discouraged from taking drinks with a lot of caffeine in them.
小题1:Which of the following can be the best title of the passage? ______
| A．What’s the Use of Energy Drinks? |
| B．Who Can Drink Energy Drinks? |
| C．What’s that in Energy Drinks? |
| D．Why Can’t We Buy Energy Drinks? |
| A．disliked | B．helped | C．stopped | D．encouraged |
| A．energy drinks are especially aimed at teenagers |
| B．energy drinks are helpful to teenagers’ study |
| C．sports players need to drink a lot of energy drinks |
| D．advertisements are important in getting people to buy energy drinks |
| A．they have beautiful colors and cool names |
| B．they have lots of caffeine |
| C．they can keep them awake and better at sports |
| D．they are said to be helpful to health |
“I’ll put a check in each of these. Then you can add your own money from your piggy bank, okay?” I said, thinking he’d be so excited to put his own stamp on things.
“That’s okay, mom. You put money in. I don’t want to waste mine,” he sweetly sang as he colored. “I want to fill my bank all the way up.”
Ack! I guess I know what our dinnertime discussion will be about tonight, I thought.
I had figured that through watching his parents donate items, helping us take toys from time to time to needy kids and putting money in the basket at church, he would just understand why it was important to help people in need — and even want to do it himself.
But of course he doesn’t really understand yet. “There’s a big disconnect between the people ‘over there’ and my piggy bank,” said parenting educator Vicki Hoefle.
“There’s nothing wrong with the child. There’s just no connection.”
As for having that conversation immediately, or forcing my son to put money into the envelopes: “Try not to do it now,” Hoefle said. Teaching a child about donating their own money or toys or time to people in need “should be a gentle introduction into what we hope will be a way of life for our kids.”
She suggested these things to help children understand the importance of giving:
* Just talk about it. Then explore the issue from a perspective he can understand.
* Use the course of a year to introduce kids to opportunities. That way, they won’t be shocked when you ask them to stuff their own money into an envelope （like this writer just did）.
* Pick a family charity for the year and have a conversation about how you all can help throughout the year.
* Think of this not as something you must teach, but as something to expose them to.
At her house, Hoefle said, “When you got something new, you gave something up.” Each birthday, her children would pick what toys they had outgrown and give them away. “There was a comfort in it. It just became a natural part of the kids’ lives.”
So I will fill those envelopes alone this time. But I’ll make sure he understands why they should be filled—gradually.
小题1:When the writer asked her son to give money to help the poor, he __________.
| A．declined to donate |
| B．sang a sweet song |
| C．put all his money in a bank |
| D．seemed very surprised |
| A．critical | B．tolerant | C．positive | D．worried |
| A．Giving courses about charity. |
| B．Setting a rule for children to give. |
| C．Inviting a lot of poor people home. |
| D．Giving children enough real life chances. |
| A．She often makes donations for people in need. |
| B．She taught her son a lesson over dinner that evening. |
| C．She is at a loss as for what she should do next. |
| D．She invited a parenting educator home for advice. |
| A．Kids, please help those in need. |
| B．Why are kids unwilling to donate? |
| C．Kindness is lost in the young generation. |
| D．How can we help kids learn generosity? |
A computer algorithm（计算程序）works almost as well as a trained linguist（语言学家） in reconstructing how dead "protolanguages" would have sounded, says a new study.
"Our computer system is doing a basic job right now," says Alex Bouchard-Côté, an assistant professor in the department of statistics at the University of British Columbia and lead author of the paper describing the algorithm. But the program does a good enough job that it may be able to give linguists a head start, the statistician added.
For centuries, scholars have reconstructed languages by hand: looking at the same word in two or more languages and making educated guesses about what that word"s "ancestor" may have sounded like. For example, the Spanish word for man （"hombre"） and the French word for man （"homme"） developed from the Latin word "homo." The way linguists compare words from descendant（后代）languages to reconstruct the parent language is called, appropriately, the comparative method.
The early 19th-century linguist Franz Bopp was the first to compare Greek, Latin and Sanskrit using this method. Jacob Grimm, one of the Brothers Grimm of fairy tale fame, used the comparative method to show how Germanic languages developed from a common ancestor.
The difference between that and Bouchard-Côté"s program, the statistician says, "is we do it on a larger scale." As a proof of concept, Bouchard-Côté fed words from 637 Austronesian languages （spoken in Indonesia, the Philippines, Malaysia and more） into the new algorithm, and the system came up with a list of what the ancestor words of all those languages would have sounded like. In more than 85 percent of cases, the automated reconstruction came within one character of the ancestor word commonly accepted as true by linguists.
The algorithm won"t replace trained human linguists, but could speed up language analysis.
Using a computer to do large-scale reconstruction offers another advantage. Bouchard-Côté says, “With big data sets, you can really start finding regularities … You might find that certain sounds are more likely to change than others."
So Bouchard-Côté"s team tested the "functional load hypothesis（假设）," which says that sounds that are more important for two clearly different words are less likely to change over time. A formal test of this hypothesis in 1967 looked at four languages; Bouchard-Côté"s algorithm looked at 637.
"The revealed pattern would not be obvious if we had not been able to reconstruct large numbers of protolanguages," Bouchard-Côté and his coauthors write in the new study.
In addition to simply helping linguists understand how people spoke in the past, studying ancient languages can perhaps answer historical questions. For example, Bouchard-Côté says, "Say people are interested in finding out when Europe was settled. If you can figure out if the language of the settling population had a word for wheel, then you can get some idea of the order in which things occurred, because you would have some records that show you when the wheel was invented.”
小题1:The underline word “protolanguages” in the first paragraph probably refers to __________.
| A．the languages that couldn’t be reconstructed by hand |
| B．parent languages that existed in the past |
| C．languages developed from a common ancestor |
| D．languages used to explain things that occurred in the past |
| A．is commonly accepted as false |
| B．dates back to the 19th century |
| C．focuses on European languages |
| D．is conducted using the comparative method |
| A．arouse people’s interest in when Europe was settled |
| B．allow us to find answers to some historical questions |
| C．enable us to picture the way linguists communicated |
| D．help figure out how the wheel was invented |
| A．will bring every dead language back to life |
| B．can take the place of linguists in language analysis |
| C．is of great help to promote language analysis with big data sets |
| D．can merely reconstruct Asian-Pacific “protolanguages” |
Until now, psychological research has maintained that both men and women have the same "fight-or-flight" reaction to stress. In other words, individuals either react with aggressive behavior, such as verbal or physical conflict ("fight"), or they react by withdrawing from the stressful situation ("flight"). However, the UCLA research team found that men and women have quite different biological and behavioral responses to stress. While men often react to stress in the fight-or-flight response, women often have another kind of reaction which could be called "tend and befriend." That is, they often react to stressful conditions by protecting and nurturing their young ("tend"), and by looking for social contact and support from others - especially other females ("befriend").
Scientists have long known that in the fight-or- flight reaction to stress, an important role is played by certain hormones(激素) released by the body. The UCLA research team suggests that the female tend-or-befriend response is also based on a hormone. This hormone, called oxytocin, has been studied in the context of childbirth, but now it is being studied for its role in the response of both men and women to stress. The principal investigator, Dr. Shelley E. Taylor, explained that "animals and people with high levels of oxytocin are calmer, more relaxed, more social, and less anxious." While men also secrete(分泌）oxytocin, its effects are reduced by male hormones.
In terms of everyday behavior, the UCLA study found that women are far more likely than men to seek social contact when they are feeling stressed. They may phone relatives or friends, or ask directions if they are lost.
The study also showed how fathers and mothers responded differently when they came home to their family after a stressful day at work. The typical father wanted to be left alone to enjoy some peace and quiet. For a typical mother, coping with a bad day at work meant focusing her attention on her children and their needs.
The differences in responding to stress may explain the fact that women have lower frequency of stress-related disorders such as high blood pressure or aggressive behavior. The tend-and-befriend regulatory(调节的) system may protect women against stress, and this may explain why women on average live longer than men.
小题1:The UCLA study shows that in response to stress, men are more likely than women to _____ .
| A．turn to friends for help | B．solve a conflict calmly |
| C．find an escape from reality | D．seek comfort from children |
| A．Men have the same level of oxytocin as women do. |
| B．Oxytocin used to be studied in both men and women. |
| C．Both animals and people have high levels of oxytocin. |
| D．Oxytocin has more of an effect on women than on men. |
| A．Male hormones help build up the body"s resistance to stress. |
| B．In a family a mother cares more about children than a father does. |
| C．Biological differences lead to different behavioral responses to stress. |
| D．The UCLA study was designed to confirm previous research findings. |
| A．How men and women get over stress |
| B．How men and women suffer from stress |
| C．How researchers overcome stress problems |
| D．How researchers handle stress-related disorders |
It is natural that a tree would grow best in a climate with plenty of sunlight and rainfall. It is also expected that little sunlight or rainfall would reduce the growth of a tree. The change from a favorable to an unfavorable climate can be found out by the reading pattern of rings in a tree trunk. To find out the weather of ten years ago, you can count the rings of a tree trunk from the outside to the inside. If the tenth ring is far from the other rings, then it is certain that plenty of sunny and rainy weather occurred. If the rings are close together, then the climate was bad for the tree.
Studying trees is important not only for the history of weather, but also for the history of man. In an area of New Mexico you can find only sand — no trees or people. However, many centuries ago a large population lived there. They left suddenly. Why?
A scientist studied the pattern of the rings of dead trees that had grown there. He made up his mind that the people had to leave because they had cut down all the trees. Trees were necessary to make fires and buildings. So, after the people destroyed the trees, they had to move.
In this example studying tree rings uncovered an exciting fact about the history of man.
小题1:We can find out the weather of five years ago by counting the rings of a tree trunk ____.
| A．from the left to the right |
| B．from the right to the left |
| C．from the inside to the outside |
| D．from the outside to the inside |
| A．bad | B．sunny | C．favorable | D．rainy |
| A．why the people had to leave |
| B．where the people had to go |
| C．what the people had to eat |
| D．how the people left |
| A．trees provided an exact record of weather for research |
| B．trees could supply them with fruit and food to live on |
| C．trees could supply them with shades |
| D．trees were materials for fires and buildings |
| A．trees can’t live in the area without population |
| B．that studying trees is important for the history of man and weather. |
| C．what the real relation is between tree rings and the history of man and weather |
| D．the history of man is important for the history of trees |
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