“沙尘暴”是下列哪种现象（ ） A．社会环境因素对人类生产、生活的影响 B．自然
题型：选择题
问题：
“沙尘暴”是下列哪种现象（ ）
A．社会环境因素对人类生产、生活的影响
B．自然环境因素对人类生产、生活的影响
C．社会环境因素和自然环境因素共同对人类生产、生活的影响
D．人类生产、生活对环境的影响
题型：选择题
We all know the dangers of fires. It's good and necessary for a family to learn how to prepare for a fire，and here are some suggestions.
Put a smoke alarm in the house. Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once.
Make escape plans. We should know all the ways out of the house. If there is a fire，everyone follows the plan to get out. Part of the plan is to check all the windows to make sure they can be opened easily.
Buy fire extinguishers（灭火器）in the house. Everyone in the family should know how to use them. Practice for a fire. We do fire practice because we teach children about fire safety. Everyone in the family should know the following fire rules：
★Don't open a hot door! The fire can grow more quickly if you open the door.
★Stay close to the floor! Smoke can be more dangerous than fire. The best air is near the floor because smoke rises.
★What will you do if your hair or clothes star to burn? First. stop! Don't run! The fire burns faster because of more air. Drop! Fall to the floor. Then roll! Turning over and over will make the fire go out. Put a blanket around you to keep air away from the fire that may still be on you.
There are many possible causes for fires. A wise family is ready all the time. If there is a fire. don't forget to call 119 for help.
小题1: When a fire happens，_______ if you open the hot door.
A．the door will soon be on fire
B．the electricity will be cut off
C．the fire will grow more quickly
D．the house will fall down小题2:What are the right steps you should take when your hair or clothes catch fire?
A．Stop, run, roll.
B．Stop, drop, roll.
C．Run, drop, roll.
D．Roll, drop, stop.小题3: What is the best title for this passage?
A．The Dangers of a Fire.
B．The Causes of a Fire.
C．Learn to Use a Fire Extinguisher.
D．Be Ready for a Fire.