Read the text and answer questions number 41 to 44A thunderstorm is a rain shower during which you hear thunder. Since the thunder comes from lightning, all thunderstorms have lightning. Usually created by surface heating, convention is upward atmospheric motion that transports whatever is in the air along with it, especially any moisture available in the air. A thunderstorm is the result of convection.
Thunderstorms are most likely in the spring and summer months and during the afternoon. Thunderstorms frequently occur in the late afternoon and at night in the plains states.
Many hazardous weather events are associated with thunderstorms. Under the right conditions, rainfall from thunderstorms causes flash flooding, killing more people each year than hurricanes, tornadoes or lightning. Lighting is responsible for many fires around the world each year and causes fatalities.

41.“Thunderstorms frequently occur in the late afternoon …”
The underlined word has the similar meaning to …
a.Rarely C. regularly
b.Constantly D. occasionally
42.What is the topic of the text?
a.the process of thunderstorm.
b.The effect caused by thunderstorm.
c.general explanation of thunderstorm
d.the time when the thunderstorm occurs.
43.How does the thunderstorm usually occur?
a.It is result of the air rises and convection
b.It is result of the sound caused by lightning
c.It is caused by convection is moisture in the air.
d.The thunderstorms occur during the afternoon rainfall.
44.“But they can occur year-round and at all hours.”
The word ‘they” in the sentence refers to …
a.Spring C. Summer
b.Convection D. Thunderstorm


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