TASK DEFINITION: In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
PROBLEM: Article: A weather map is an important tool for geographers. A succession of three or four maps presents continuous picture of weather changes. Weather forecasters are able to determine the speed of air masses and fronts to determine whether an individual pressure aroa is deepening or becoming shallow and whether a front is increasing or decreasing in intensity .They are also able to determine whether an air mass is retaining its original characteristics or taking on those of the surface over which it is moving. Thus, a most significant function of the map is to reveal a summary picture of conditions in the atmosphere at a given time. All students of geography should be able to interpret a weather map accurately.Weather maps contain an enormous amount of information about weather conditions existing at the time of observation over a large geographical area. They reveal in a few minutes what otherwise would take hours to describe. The United States Weather Bureau issues information about approaching storms, floods, frosts and all climatic conditions in general. Twice a month it issues a 30-day"outlook" which is a rough guide to weather conditions likely to occur over broad areas of the United States. These 30-day outlooks are based upon an anaiysis of the upper air levels which often set the stage for development of air masses, fronts and storms. Considerable effort is being exerted today to achieve more accurate weather predictions, with identifying and tracking storms over regions which have but few meteorological stations. Extensive experiments are also in progress for weathef modification studies.
Answer: frosts

SOLUTION: One characteristic of weather maps NOT mentioned by the author in this passage is _ .

PROBLEM: Article: Perhaps the most astonishing theory to come out of kinetics,the study of body movement,was suggested by Professor Ray Birdwhistell.He believes that physical appearance Is often culturally programmed.In other words,we learn our looks;we are not born with them. A baby generally unformed facial features.A baby,according to Birdwhistell,learns where to set the eyebrows by looking at those around family and friends.This helps explain why the people of some regions of the United States look so much lilke.New Englanders or Southerners have certain common facial characteristics that cannot be explained by genetics .The exact shape of the mouth is not set at birth,it is learned later.In fact,the final mouth shape is not formed until well after permanent teeth are set.For many,this can be well into adolescence .A husband and wife together for a long time often come to look somewhat alike.We learn our looks from those around us. This is perhaps why in a single country there are areas where people smile more than those in other areas.In the United States,for example,the South is the part of the country where the people smile most frequently.In New England they smile less,and in the western part of New York State still less.Many Southerners find cities such as New York cold and unfriendly,partly because people on Madison Avenue smile less than people on Peach Tree Street jn Atlanta,Georgia.People in densely populated urban areas also tend to smile and greet each other in public less than people in rural areas and small towns.
Answer: body movement

SOLUTION: The passage might be taken out of a book dealing with _

PROBLEM: Article: Wake Up,Sleep Gene Some people can stay up all night and still get work done the next day.I'm not one of them.After a night without enough sleep,I feel bad-tempered.I have trouble remembering things.And all I want to do is crawl back into bed and sleep. How do you feel after you've stayed up late to finish schoolwork? Or the day after an overnight party? Scientists now say that your answers to these questions may depend on your genes. New research suggests that a gene called period 3 affects how well you function without sleep.The period 3 gene comes in two forms: short and long.Everyone has two copies of the gene.So,you may have two longs,two shorts,or one of each.Your particular combination depends on what your parents passed on to you. Scientists from the University of Surrey in England studied 24 people who had either two short or two long copies of period 3.Study participants had to stay awake for 40 hours straight.Then,they took tests that measured how quickly they pushed a button when number flashed on a screen and how well they could remember lists of numbers. Results showed that the people with the short form of period 3 performed much better on these tests than the people with the long form did.In both groups,people performed worst in the early morning.That's the time when truck drivers and other night-shift workers say they have the most trouble concentrating. After the first round of experiments,participants were finally allowed to sleep.People in the group that performed well on the tests took about 18 minutes to nod off. People with the long period 3 genes,by contrast,fell asleep in just 8 minutes.They also spent more time in dip sleep.That suggests that people with the long form of the gene need more and deeper sleep to keep their brains working at top form. I think I must have the long form of period 3.What about you?
Answer: to tell the result of a research on sleepy gene

SOLUTION:
The purpose of this passage might be _ .