The scientist was in a hurry. She (离开) her lab to get some water before dark. She was testing the water that went into the ocean. Her job was to find out the cause of
(污染) in the sea. She lifted out the water and looked at the things in it. Old clothes, plastic bags and paper boxes were in the (脏的) water. She felt very sad and angry! "Don't people (意识到) that everything they throw onto the street gets washed into rivers? And they lead right into the ocean!" she said (大声地) , "How many years will it take to make it clean again?"
The scientist was (担心的) about the ocean animals as she walked back to the beach. But when she got there, a group of students from a (当地的) school were cleaning the beach. They spent their afternoon carrying bags of (垃圾) to the bins at nearby beaches. When the scientist saw it happen, she was (被填满) with joy! As she talked with the students, they told
her, "We must do something to (保护) the ocean! We should be responsible for the earth."
