B. Choose the words or expressions and complete the passage: (6分) ★ More than three hundred primary students and soldiers took part in an environment education program. They picked up rubbish around the Lhalu Wetland Conservation area in Lhasa on June 5th to __59__ the World Environment Day. A team of ten scientists and experts from all over the country took part in the one-day __60__ to share their knowledge of environment protection with students and soldiers. “We take this special day to teach others how to do good for environment protection, and we hope the knowledge of environment protection can be __61__ through this activity,” said Zhang Lin, a member of the team. “It is my sixth time to attend the activity and it is so __62__ for us students to take part in such an activity. Our knowledge of environment protection has been strengthened,” said Feng Yingying, a primary school student at Lhasa’s Lhalu Primary School. “I think rubbish is __63__ for our environment. We collect waste, and then we will recycle the rubbish,” she said. The students spent the rest of the day on the main streets of Lhasa to __64__ leaflets (传单) and slogans about environment protection. ( )59.