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单选题
The dense black cumulonimbus clouds surrounding the eye of a hurricane are called（）.
A
Spiral rainbands
B
Cloud walls
C
Funnel clouds
D
Cyclonic spirals
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单选题All of the following are associated with cumulonimbus clouds EXCEPT（）.A
steady rainfallB
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thunderstormsD
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考题
单选题The dense black cumulonimbus clouds surrounding the eye of a hurricane are called（）.A
Spiral rainbandsB
Cloud wallsC
Funnel cloudsD
Cyclonic spirals
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单选题Cumulonimbus clouds are formed by（）.A
vertical air movementsB
heavy rainstormsC
horizontal air movementsD
any movement of moist air
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单选题Cumulonimbus clouds can produce（）.A
dense fog and high humidityB
gusty winds，thunder，rain or hail，and lightningC
clear skies with the approach of a cold frontD
a rapid drop in barometric pressure followed by darkness
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单选题The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the（）.A
Wall cloudB
Nimbostratus cloudC
BarD
Funnel
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单选题Altocumulus clouds are defined as（）.A
high cloudsB
middle cloudsC
low cloudsD
vertical development clouds
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单选题Cumulus clouds that have undergone vertical development and have become cumulonimbus in form，indicate（）.A
clearing weatherB
that a warm front has passedC
probable thunderstorm activityD
an approaching hurricane or typhoon
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单选题The first indications a mariner will have of the approach of a warm front will be （）.A
large cumulonimbus (thunderclouds) building upB
high cirrus clouds gradually changing to cirrostratus and then to altostratusC
fog caused by the warm air passing over the cooler waterD
low dark clouds accompanied by intermittent rain
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单选题We can conclude from the last paragraph that______.A
trade winds are harmful to the low clouds.B
deep clouds are helpful to cool the earth.C
global warming can result in more low clouds.D
global warming can destroy the form of atmosphere.
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单选题In the Northern Hemisphere，what type of cloud formations would you expect to see to the west of an approaching tropical wave?（）.A
Cumulus clouds lined up in rows extending in a northeast to southwest directionB
High altostratus clouds in the morning hoursC
Cirrostratus clouds lined up in rows extending in a northeast to southwest directionD
Cirrostratus clouds lined up in rows extending in a north to south direction
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单选题The inner cloud bands of a hurricane，when viewed from a distance，form a mass of dense，black cumulonimbus clouds called the（）.A
bar of the stormB
eye of the stormC
funnelD
front
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