阅读下面短文，掌握其大意，然后从A、B、C、D四个选项中选出可以填入空白处的最佳答案。

    Ronny looked like every other kid in the classroom where I volunteered as the Reading Mom. However, he had a speech problem so he couldn't 1 like other kids in his grade.

     I worked with all the students in Ronny's class one by one to improve their reading skills. On the days when it was Ronny's 2, I'd give him a silent smile, that's why he sat very close to me and opened the book as if he was opening a treasure that 3 had ever seen.

    I watched his fingers move 4 under each letter as he struggled* to read out. Every time he 5 to read a word with a strange pronunciation, the biggest smile would spread across his face and his 6 would shine with pride, which broke my heart each and every time.

    A few weeks 7 the school year ended, I held an awards ceremony*. I presented Ronny with a book written by 8. A few days later, I returned to the school to visit. I 9 Ronny on a chair near the playground, the book open in his lap. His head teacher said, “ He hasn't 10 that book since you gave it to him. Do you know that's his first book he's ever actually owned?”

    Deeply moved, I walked 11 Ronny, placed my hand on his shoulder and asked, “Will you read me your book, Ronny?” For the next few minutes, he read to me more 12 than I'd ever thought possible from him. The pages were already dog-eared, like the book had been read 13 times already. When he finished reading, Ronny closed his book and said with great satisfaction, “ 14 good book!"

    At that moment,as a writer, I knew I would get 15 about my own writing and do what that writer had done, and probably still does — care enough to write a story that changes a child's life, care enough to make a difference.

Lily is a little girl at school. She is shy and many students do not know her. But she enjoys playing soccer. Her friends and classmates always laugh (笑) at Lily for her interest in soccer.     ★        , and she wants to become a great soccer player. 

Every day, after coming back from school, Lily quickly finishes her homework and goes out to practice soccer. Her mother understands Lily's love for the sport and always encourages her to go play. 

One day, the school says there will be a soccer game. Lily wants to give it a try. She takes part in the game and her classmates laughs at her once again. Lily does not give up. She tries her best to score goals (进球), one after another. 

The other students are surprised to see how well Lily plays. Their team does well with her help. They even win the game in the end. With her hard work. Lily proves (证明) herself to others. If you're strong and determined like her, you can make your dream come true one day. 

Everyone knows that exercise is important. We all need to exercise. Doctors say it is good for us. It makes our heart and body strong. Children who often exercise are more clever. This means they do better in tests and schoolwork than those who don't exercise. There are many ways to exercise. 

You can walk, run, swim, skate or play ball games. Make sure you exercise in the following ways. You have to like what you're doing. Exercise enough but not too much. It's best to exercise twice each week. Thirty minutes each time is enough. Try all kinds of things until you find one, two or even three sports that are right for you. 

You can exercise at fitness centers（健身中心）. They have a lot of equipment （设备） there. The equipment will help exercise your arms, legs and other parts of your body to make you fit. Some people buy equipment for their homes. But it is very expensive. 

Exercise can be fun. Friends can exercise together at a fitness center, or they can play sports together. How do you exercise? 

Sam is an eight-year-old student. He can't always have fun at school,1 he doesn't like his school. He is good at all his2 , but he doesn't have friends. Sam is not happy about that.3 a Saturday morning, Sam sees a big tree. 

A small blackboard is in 4 tree. It says, "I am a magic(有魔力的)tree. Say the right words to me and then I can 5 you."

Sam says many words but they are not useful. The tree6 say a word. At last, he says, "Please, dear tree! Thank you!" The tree says, "Sam，say7 more(更多) and then you can be happy."

After that, Sam often 8 "Please" and "Thank you" at school. His classmates think he is nice and they all want 9 his friends. Then Sam asks many of his classmates to come to his 10 birthday party. They all have a good time.

No one can know what the weather will be like in the future, but many people think there will be some changes. 

Scientists say that in many places it will be hotter and it will rain less. Some countries in Africa(非洲) will become dry, and people can hardly (几乎不) find food and water. In Southern Europe(欧洲) and the United States, plants will be difficult to grow. People will also have problems finding food in the future. 

No one knows how much warmer it will be, but scientists say that the change is going to be at least(至少) 2℃. They say that the ice in the Arctic (北极) is going to melt____in the next years and a lot of the animals there are going to die. There is also going to be more water in the sea, so cities near the sea are going to disappear. 

Another change is that there will be more hurricanes and typhoons (飓风和台风). Scientists say they will happen all over the world, and many people will lose their homes.