A. It"s not advisable to relate a single season to climate change.
B. It"s proper to see climate change as a major determining factor.
C. Climate change has nothing to do with the season"s inactivity.
D. The greater the climate change is, the more varied the season becomes.
听力原文: Crime has its own cycles,a magazine reported some years ago. Police records show a surprising relation between changes in the season and crime patterns.
The pattern of crime has changed very little over a long period of years. Murder reaches its high during July and August,as do other violent attacks. Murder,in addition,is more than seasonal;it is a weekend crime. It is also a nighttime crime: 62 percent of murders are committed between 6 P. m. and 6 a. m. One is most likely to be robbed between 6 P. m. and 2 a. m. on a Saturday night in December,January,or February. Except for one strange statistic,May is the least criminal month of all.
Apparently our intellectual season cycles are completely different from our criminal patterns. Professor Huntington made a lot of studies to discover the seasons when people read serious books,attend scientific meetings,and make the highest scores on examinations. In all examples,he found a spring peak and an autumn peak separated by a summer low. On the other hand,Professor Huntington's studies showed that June is the peak month for suicides and for admitting patients to mental hospital. June is also a peak month for marriages!
Possibly,high temperature and humidity bring on our strange and surprising summer actions,but police officers are not so sure. “There are,of course,no proof of a relation between humidity and murder”,they say. “Why murder's high time should come in the summer time we really don't know”.
(30)
A.Different kinds of crimes。
B.Increasingly high crime rate in the U.S.
C.Seasonal changes in the natural environment.
D.The relations between changes in the season and crime patterns.
A.baby bust
B.baby boom
C.season of love
D.great migration
The last paragraph is mainly about ______.
A.the comparison between plants in different areas
B.the growth of new leaves in the rainy season
C.water loss by evaporation in the dry season
D.the changes in the leaves of the perennials
Unlike the summer high in crimes of bodily harm, robbing has a different cycle. You are most likely to be robbed between 6 p.m. and 2am. on a Saturday night in December, January, or February. The month with least crimes of all is in May except for one strange fact. More dog bites are reported in this month than in any other month of the year.
Clearly our seasonal cycles of knowledge are completely different from our tendencies for crimes. Professor Huntington made extensive studies to discover the seasons when people read serious books, attend scientific meetings and get highest results on examinations. In all cases, he found a spring high and autumn high separated by a summer low.
Possibly, high temperature and high humidity(湿度)cause our strange and violent summer actions, but police officials are not sure. "There is, of course, no proof of a connection between humidity and murder," they say," Why murder's high time should come in the summer time we really don't know."
A good title of the passage would be ______.
A.Crime Cycles
B.Summer Crimes
C.A Time for Murder
D.The Most Peaceful Month
A.a small stream of water flowing naturally from theearth
B.the season of the year, occurring between winter and summer
C.the act or an instance of jumping or leaping
D.a length of metal woundaround, which returns to its original shape afterbeing pushed
Types of Climate
Climate is the combination of temperature, moisture, wind, and sunshine at a place over a period of many years. Weather is made up of atmospheric conditions during a few hours or days. The weather may be rainy on a certain day. But that place may usually have a warm, dry, sunny climate. We learn about the climate of a place by studying its temperature, moistare, wind, and sunshine from season to season and year to year.
Temperature and the amount of rainfall are the two most important elements of climate. Others are humidity(air moisture), cloudiness, fog, sunshine, wind, storms, and air pressure.
There are many different types of climate on earth. Climates of the world can be classified according to their latitudes and the plants that grow there. Different kinds of plants need different amounts of heat and moisture for growth. The vegetation of a region tells us about temperature and rainfall conditions over a long period of time.
Tropical Climates
Tropical climates are found in regions between 35 N and 35 S latitude. In the tropical rain forest(nearest the equator)conditions are warm and rainy all year long, and there is a thick cover of trees. Places farther north and south of the equator have a tropical wet-and-try climate. There the forests are not so dense, and many trees lose their leaves in the dry season. Along 23.5 N and 23.5 S latitude there are vast regions of tropical desert climate, where very little vegetation can grow.
Subtropical Climates
Subtropical climates are usually found between 30 and 40 North and South latitudes. The subtropical western coasts of the continents have a Mediterranean climate. Summers are hot and dry; winters are mild and wet. On the subtropical eastern coasts of continents the climate is humid subtropical. Summers are hot, and winters are mild. There is enough rainfall in all seasons for forests.
Mid-latitude Climates
Mid-latitude climates occur between 40 and 60 NS latitudes. Strong westerly winds blow in the mid latitudes. The climate of the west coast of North America is mild and rainy most of the year. It helps the growth of fine timber forests. Some places in the mid-latitudes do not receive moisture because of mountain barriers or their great distance from the oceans. Humid continental climates cover large mid-latitude areas in eastern parts of the continents. They are forest climates with cold winters and warm summers. Most of the rainfall comes in the summer.
High-latitude Climates
High-latitude climates occur from 60 to the poles, North and South. In the high latitudes temperatures are very cold in winter and cool in summer. The short summers are warm enough for forests of ever green trees. Greenland and Antarctica have a polar climate, where great ice caps exist because of year round freezing.
High-altitude Climates
Highland climates are cooler than the surrounding lowlands because of the effects of altitude. High land climates are found on the high mountains of the world, even on the equator. In the tropics and mid latitudes different kinds of vegetation grow in zones up the slopes of mountains to the permanent snow fields.
The Causes of Different Climates
The differences in climate from place to place are caused by climatic controls. The major climatic controls are latitude, altitude, land and water bodies, ocean currents, winds, and storm centers.
Latitude makes climates colder toward the north and south poles(high latitudes)than at the tropics near the equator(low latitudes). Low-latitude regions remain warm throughout the year. At higher latitudes there are greater differences between winter and summer temperatures.
Altitude affects climate by lowering temperatures as the height above sea level increases. At high altitudes the air is less dense and does not absorb and hold as
A.Y
B.N
C.NG
A.adjoining
B.adroit
C.enchanting
D.instructive
A.weather
B.temperature
C.season
D.climate