Ⅳ. 还原短文6选5
Lightning is one of nature's light shows. It often happens in hot, wet places. Around the world, there are about 2,000 lightning storms happening at any given moment. It is a large electric flash of light which is very hot. 16.
D
This moving air makes a loud sound called thunder. Because light travels at greater speed than sound, we see lightning before we hear thunder.
Lightning is fun to watch but dangerous. 17.
B
When lightning hits land, it can cause a fire. Many wildfires start because of summer lightning. Because the land, trees and the grass are dry, they burn easily. It also brings danger to human beings. During storms with lightning, the
electric shocks(电击) could destroy buildings or kill people outside. Some people using something electric or wet may get hurt in their homes.
18.
F
It is necessary to keep the following dos and don'ts in mind. Stay inside during storms with lightning. Stay away from windows. Do not take a shower when there is lightning. Do not wash your hands. Remind your parents not to use the washer. Lightning can go through water. 19.
E
Stay indoors for a while to be sure the storm is over. Do not use anything that is electric. Lightning can go through wires(电线). Remind your parents to turn off TVs and computers.
20.
A
Learn about it. Learn how to stay safe. Then you can enjoy nature's light shows.
A. Lightning is an exciting part of nature.
B. It does harm to the earth.
C. As soon as the rain stops, you can go outside.
D. It heats the air around it and the hot air moves at high speed.
E. Even after the rain stops, there can still be lightning.
F. You need to know some facts about lightning to keep safe.