upper front aloft
cyclone
occluded front
cold front
第1题：
Which of the following statements concerning frontal movements is TRUE ________．
A.The temperature rises after a cold front passes
B.The barometric pressure rises when a warm front passes
C.A cold front generally passes faster than a warm front
D.A warm front usually has more violent weather associated with it than a cold front
第2题：
An occluded front is caused by a(n) ______.
A.low pressure area
B.high pressure area
C.area of calm air
D.cold front overtaking a warm front
第3题：
There is a truck ______ the classroom.
A、in the front of
B、 in front of
C、in front
D、at the front of
第4题：
Cyclones tend to move ______.
A.perpendicular to the isobars in their warm sectors
B.parallel to the isobars in their warm sectors
C.parallel to the line of the cold front
D.perpendicular to the line of the cold front
第5题：
Brief, violent showers frequently accompanied by thunder and lightning are usually associated with ______.
A.passage of a warm front
B.winds shifting counterclockwise in the Northern Hemisphere
C.stationary high pressure systems
D.passage of a cold front
第6题：
A generally circular low pressure area is called a(n)______．
A.cyclone
B.anticyclone
C.cold front
D.occluded front
第7题：
As a cold front passes an observer, pressure ______.
A.drops and winds become variable
B.rises and winds become gusty
C.drops and winds become gusty
D.rises and winds become variable
第8题：
Cumulonimbus clouds are most likely to accompany a(n) ______.
A.high pressure system
B.cold front
C.warm front
D.occluded front
第9题：
Clouds appearing in the following order: cirrus, cirrostratus, altostratus, stratus, and nimbostratus usually indicate the approach of a(n) ______.
A.warm front
B.occluded front
C.medium front
D.cold front
第10题：
In the Northern Hemisphere, gusty winds shifting clockwise, a rapid drop in temperature, thunderstorms or rain squalls in summer ( frequent rain / snow squalls in winter ) then a rise in pressure followed by clearing skies, indicate the passage of a(n) ______.
A.warm front
B.tropical cyclone
C.anticyclone
D.cold front