Ⅳ. Reading comprehension.（阅读理解。）
Thunderstorms are common natural phenomena(现象),but they can be dangerous if we don't take proper precautions(预防). Here are some important safety tips to follow during a thunderstorm.
First, stay indoors. If you are outside when a thunderstorm starts, find a safe building or a closed car to take shelter immediately. Avoid staying in open areas such as fields,
parks, or on top of hills. Also, stay away from tall objects like trees, poles, and towers, as they are more likely to be struck by lightning.
Second, avoid using electronic devices. Lightning can travel through power lines and damage electronic equipment. Do not use telephones, computers, TVs, or other electrical appliances during a thunderstorm. It's also a good idea to unplug them to prevent damage from power surges.
Third, be careful with water. Do not take a bath, shower, or wash dishes during a thunderstorm. Lightning can travel through plumbing systems and cause electric shocks. Also, avoid swimming in pools, lakes, or rivers until the storm has passed completely.
Fourth, stay away from windows and doors. Close all windows and doors to prevent rainwater from entering the house. Do not stand near windows or glass doors, as strong winds or flying debris(碎片) may break the glass and cause injuries.
Finally, wait for the storm to pass completely before going outside. Even if the rain stops, there may still be lightning. It's safe to go outside only after 30 minutes of the last thunderclap.
By following these safety tips, you can reduce the risk of injury or death during a thunderstorm. Remember, safety should always be the top priority when facing natural disasters.
()1. What should you do if you are outside when a thunderstorm starts?
A. Stay in open areas.
B. Find a safe building or a closed car to take shelter.
C. Stand near tall objects.
D. Continue swimming in a lake.
()2. Why should you avoid using electronic devices during a thunderstorm?
A. They will use too much electricity.
B. Lightning can travel through power lines and damage them.
C. They will make loud noises.
D. They are not necessary during a storm.
()3. What should you not do with water during a thunderstorm?
A. Drink water.
B. Water plants.
C. Take a bath or shower.
D. Wash hands quickly.
()4. How long should you wait before going outside after the last thunderclap?
A. 10 minutes.
B. 20 minutes.
C. 30 minutes.
D. 40 minutes.
()5. What is the main idea of the passage?
A. How to predict a thunderstorm.
B. The damage caused by thunderstorms.
C. Safety tips during a thunderstorm.
D. The causes of thunderstorms.

1.B 2.B 3.C 4.C 5.C