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 (氣鋒) to determine whether an individual pressure aroa is deepening or becoming shallow and whether a front is increasing or decreasing in intensity (強(qiáng)烈).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 (氣象)stations. Extensive experiments are also in progress for weathef modification studies.

1. One characteristic of weather maps NOT mentioned by the author in this passage is_______.

    A. floods        B. fronts        C. temperature changes      D. frosts

2. The thirty-day forecast is determined by examining________.

    A. daily weather maps                     B. upper air levels

    C. satellite reports                      D. changing fronts

3.The observation of weather conditions by satellites is helpful because it________

A.is modern                            

B. uses electronic instruments

    C. makes weather prediction easier

    D. shows things that would otherwise take hours to describe in a few minutes

4.A weather map is a summary because it_______

    A. sums up a great deal of information       B. appears daily

    C. shows changing fronts                     D. is a science book

5.You may possibly read this article in_________.

    A. a magazine    B. newspaper      C. a novel        D. a science book

 

【答案】

 

1.C

2.B

3.D

4.A

5.D

【解析】略

 

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：閱讀理解

       To err is human．To blame the other guy is even more human．

       Common sense is not all that common．

       Why tell the truth when you can come up with a good excuse?

       These three popular misquotes （戲謔的引語） are meant to be jokes, and yet they tell us a lot about human nature．To err, or to make mistakes, is indeed a part of being human, but it seems that most people don’t want to accept the responsibility for the problem．Perhaps it is the natural thing to do．The original quote about human nature went like this, “ To err is human, to forgive, divine（神圣的）．” This saying mirrors an ideal: people should be forgiving of others’ mistakes．Instead, we tend to do the opposite --- find someone else to pass the blame on to．However, taking responsibility for something that went wrong is a making of great maturity．

       Common sense is what we call clear thought．Having common sense means having a good general plan that will make things work well, and it also means staying with the plan．Common sense tells you that you take an umbrella out into a rainstorm, but you leave the umbrella home when you hear a weather forecast for sunshine．Common sense does not seem to be common for large organizations, because there are so many things going on that one person cannot be in charge of everything．People say that in a large company, “the right hand does not know what the left hand is doing．”

       And what is wrong with a society that thinks that making up a good excuse is like creating a work of art? One of the common problems with making excuses is that people, especially young people, get the idea that it’s okay not to be totally honest all the time．There is a corollary（直接推論）to that: if good excuse is “good” even if it isn’t honest, then where is the place of the truth?

According to the author, what is a sign of a man’s maturity?

       A．Doing things his own way．

       B．Bearing responsibility for his mistakes．

       C．Making as few mistakes as possible．

       D．Thinking seriously about his wrongdoing．

Which of the following is N0T based on common sense?

       A．A man tries to take charge of everything in a large company．

       B．A student goes out with an umbrella in stormy weather．

       C．A company’s next move follows a good plan．

       D．A lawyer acts on fine judgments．

What is the author’s opinion about a good excuse?

       A．Making a good excuse is sometimes a better policy．

       B．Inventing a good excuse needs creative ideas．

       C．A good excuse is as rewarding as honesty．

       D．Bitter truth is better than a good excuse．

What would be the best title for his passage?

       A．A Mirror of Human Nature     B．To Blame or to Forgive

       C．A Mark of Maturity         D．Truth or Excuse

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

Michael Fish may soon be replaced as a weather forecaster by something truly fishier---the shark(鯊魚).

Research by a British biology student suggests that sharks could be used to predict storms.

Lauren Smith, 24, is close to completing her study on shark’s ability to sense pressure.

If her studies prove the theory, scientists may be able to monitor the behaviour of sharks to predict bad weather.

Miss Smith had previously studied the behaviour of lemon sharks in the Bahamas.

She then used their close relatives, lesser spotted dogfish, for further research at Aberdeen University.

Her work---thought to be the first of its kind to test the pressure theory ---- resulted from the observation that juvenile blacktip sharks(黑邊鰭真鯊) off Florida moved into deeper water ahead of a violent storm in 2001.

Miss Smith said: “I’ve always been crazy about traveling and diving and this led me to an interest in sharks.”

“I was delighted to have been able to research in the area for my degree. I know there’s so much more we need to understand ---- but it certainly opens the way to more research.”

It has been discovered that a shark senses pressure using hair cells in its balance system.

At the Bimini Shark Lab in the Bahamas, Miss Smith fixed hi-tech sensors to sharks to record pressure and temperature, while also tracking them using GPS (Global Positioning System) technology.

In Aberdeen, she was able to study the effects of tidal(潮汐的) and temperature changes on dogfish----none of which were harmed. She also used a special lab which can mimic(模擬) oceanic pressure changes caused by weather fronts.

She is due to complete her study and graduate later this year. She says she will be looking for a job which will give her the chance to enrich her experience of shark research. 

The passage is most probably taken from _____.

A. a short-story collection

B. a popular science magazine

C. a research paper

D. a personal diary

What do we learn from the first four paragraph of the passage?

A. Sharks may be used to predict bad weather.

B. Sharks’ behaviour can be controlled.

C. Michael Fish is not qualified for his job.

D. Lauren Smith will become a weather forecaster.

Lauren Smith conducted her research by _______.

 A. removing hair cells from a shark’s balance system

 B. measuring the air pressure of weather fronts

 C. recording sharks’ body temperature

 D. monitoring sharks’ reaction to weather changes

What is the passage mainly about?

 A. A popular way of forecasting weather.

 B. A new research effort in predicting storms.

 C. Biologists’ interest in the secrets of sharks.

 D. Lauren Smith’s devotion to scientific research.

查看答案和解析>>

科目：高中英語 來源：江西省于都縣2010屆高三下學(xué)期3月模擬考試英語試題 題型：閱讀理解


E
In the atmosphere．carbon dioxide．a(chǎn)cts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun’s rays to enter but prevents the heat from escaping．
According to a weather expert’s prediction，the atmosphere will be 3°C warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate．If this warming up took place，the ice caps in the poles would begin to melt, thus raising sea level several meters and severely flooding coastal cities．
Also，the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere，possibly resulting in an alteration of the earth’s chief food growing zones．
In the past，concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet．But the weather experts are now paying more attention to West Antarctic，which may be affected by only a few degrees of warming，in other words，by a warming on the scale that will possibly take place in the next fifty  years from the burning of fuels．
Satellite pictures show that large areas of Antarctic ice are already disappearing．The evidence available suggests that a warming has taken place．This fits the theory that carbon dioxide warms the earth．
However, most of the fuel is burnt in the northern hemisphere，where temperatures seem to be falling．Scientists conclude，therefore，that up to now natural influences on the weather have gone beyond those caused by man．The question is：Which natural cause has most effect on the weather?  
One possibility is the variable behavior of the sun．Astronomers at one research station have studied the hot spots and ‘cold’ spots (that is，the relatively less hot spots)on the sun．As the sun rotates，every 27．5 days，it presents hotter or colder faces to the earth，and different aspects to different parts of the earth．This seems to have a considerable effect on the distribution of the earth’s atmospheric pressure，and consequently on wind circulation．The sun is also changeable over a long term：its heat output goes up and down in cycles，the latest trend being downward．
Scientists are now finding shared relation between models of solar weather interaction and the actual climate over many thousands of years，including the last Ice Age．The problem is that
the models are predicting that the world should be entering a new Ice Age and it is not．One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia(惰性)of the earth’s climate．If this is right，the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun’s fading heat．
72．It can be concluded that a concentration of carbon dioxide in the atmosphere would ______．
A．mean a warming-up in the Arctic
B．raise the temperature of the earth’s surface
C．prevent the sun’s rays from reaching the earth’s surface
D．explain the cause of great changes in the climate in the northern hemisphere
73．Although the fuel consumption is greater in the northern hemisphere, temperatures there
seem to be falling．This is _______．
A．mainly because the levels of carbon dioxide are rising
B．partly due to changes in the output of solar energy
C．possibly because the ice caps in the poles are melting  
D．only due to the effect of the inertia of the earth’s climate
74．On the basis of their models , scientists are of the opinion that  ________
A．the climate of the world should be becoming cooler
B．the new Ice Age will be delayed by the greenhouse effect
C．the man．made warming effect helps to increase the solar effects  
D．it will take thousands of years for the inertia of the earth’s climate to take effect
75．If the assumption about the delay of a new Ice Age is correct ,  _________     
A．ice would soon cover the northern hemisphere
B．the greenhouse effect could work in favor of the earth
C．the best way to overcome the cooling effect would be to bum more fuels
D．the increased levels of carbon dioxide could warm up the earth even more quickly

查看答案和解析>>

科目：高中英語 來源：09-10學(xué)年福建省高一下學(xué)期3月月考（英語） 題型：單項(xiàng)填空

 It was ______ that they all went swimming in the river.

A．such a hot weather

B．such hot weather

C．so hot weather

D．so hot a weather

 

查看答案和解析>>

同步練習(xí)冊答案