[单项选择]

A weather map is an important tool for geographers. A succession of three of four maps presents a continuous picture of weather changes. Weather forecasts are able to determine the speed of air masses and fronts; to determine whether an individual pressure area 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 synoptic 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 informat
A. 30-day "outlook"
B. controlling storms
C. satellites
D. manipulating weather

[单项选择]

A weather map is an important tool for geographers. A succession of three of four maps presents a continuous picture of weather changes. Weather forecasts are able to determine the speed of air masses and fronts; to determine whether an individual pressure area 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 synoptic 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 informat
A. summarizes a great deal of information
B. can be interpreted accurately
C. appears daily
D. shows changing fronts

[单项选择]A weather map is synoptic because it ______.
A. summarizes a great deal of information
B. can be interpreted accurately
C. appears daily
D. shows changing fronts

[单项选择]A "synoptic" weather map is a chart that ______.
A. summarizes a great deal of general weather information
B. appears daily and can be interpreted accurately
C. presents data on atmospheric conditions over a wide area
D. shows ever-changing fronts

[单项选择]Geographers who study mobility are most probably interested in ______.
A. the fact that people of different nationalities or ethnical groups reside in different places
B. why people of one type prefer to isolate themselves from those of another type
C. peculiar characteristic of people from different countries in choosing living places
D. what types of people, like to move frequently and why they keep changing their living places

[单项选择]The weather forecast predicted tomorrow's weather as ______.
A. various
B. variable
C. variant
D. varied

[单项选择]METEOROLOGY : WEATHER::
A. (A) cosmology : atmosphere
B. (B) seismology: earthquake
C. (C) alchemy : chemistry
D. (D) phonetics : language
E. (E) mythology : narrative

[单项选择]Why is blinking important

[单项选择]Why is music important


A. It can arouse excitement
B. It can help to slow down body rhythms
C. It can make people eager to study
D. It makes people used to the passive learning