Unit 12

UNIT 12 Part A Word List Learn the words. Write the meanings in your own language. flood The awful flood destroyed several structures in our town. gentle The farmers required that children be gentle with their animals. melt Be careful! Your ice cream is melting. You should eat it fast! operate Cody operates this huge machine on his grandparents' farm. recognize Sally recognized some of the things she saw from the train. remain It was windy, but Eve's hat remained on her head. task His mom showed him how to complete the task the proper way. various We planted various flowers in front of our house this spring. waste Do not waste water. Turn it off when you are not using it. worth This car is worth a fortune. I do not think we will be able to buy it.

Part B Word List Learn the words. Write the meanings in your own language. climate She hated the cold climate in the northern part of the country. emergency People drive at maximum speed to get help during an emergency. factory This factory is the root of the air problem in the area. freeze It was so cold that the lake froze all the way to the bottom. population The population of penguins has dropped rather than increased. recently We recently put these plants in pots for our class project. responsible We let Alan borrow our tools because he is a responsible person. storm The two men hurried to go inside during the storm. stream The man ran through the cool water of the stream. temperature When Cassie is sick, her temperature rises.

Reading Practice A. Read the passage. Earth Day Every April, we celebrate the earth. But the earth is in trouble. Recently, the climate in various places around the world is changing. In some cold areas, the temperature has risen. Ice melts more quickly than before. It causes more floods there. A small stream can turn into a dangerous river very quickly! We need to recognize how our actions hurt the environment. We could be moving toward a major emergency! The human population on the earth is getting bigger and bigger. We cut down trees to build homes.Factories produce dirty smoke that goes into the air. We also waste a lot. We throw things away rather than recycle them. Our task is to protect the earth immediately. We need to be more responsible, or we will all be in trouble.