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.

Have you ever read stories of Sherlock Holmes—a famous detective? Here is one of his cases.

Stapleton, Charles' younger brother, found that he would inherit (继承) the Baskerville lands if Charles and his nephew(侄子) —Henry both died.

    Charles who had a weak heart believed super natural stories. After knowing this, Stapleton had the idea of buying a huge hound, and of using the phosphorus(磷) to make it shine like the hound in one story.

    Then Stapleton asked his friend Laura to write a letter to bring Charles to the moor gate on that sad night. The hound, which was shining with phosphorus, chased Charles down the Yew Alley. Charles' fear was so great that his weak heart stopped, and he died but the animal did not touch the dead body. There was no sign of murder. It was difficult for Holmes to find the murderer.

    Two weeks later, Stapleton learned that Henry had reached England. He took his wife and the hound with him. He wore a false beard and followed Henry in London. He wanted to use the same way to murder Henry there. He needed something to give the hound Henry's smell, so he paid a woman at Henry's hotel to steal one of his shoes. The first one was a new one, which was no use for the hound, so it was put back. And then another older shoe was stolen. Before he was ready to murder Henry, he wasn't sure if his wife would keep his secret, so he did not tell her the truth. He locked her up in their hotel. She knew that he must have some evil plans. She sent Henry a letter which was made of words cut from a newspaper.

    After receiving the letter, Henry realized he was in great danger and it must have something to do with his uncle Charles' death. So he asked Holmes for help.

    A 15-year-old student who invented a flashlight(手电筒) getting power from the holder's body heat is going home today from California with a big prize and a chance to do further research.

    Ann Makosinski was the only Canadian among the four winners at Google's international science competition. Thousands of young scientists from around the world took part in the competition.

    Winning the science and technology competition was "a surprise". Ann said, "I think it will have a great influence on my future."

    Ann thanked her family for encouraging her interest in science and said that her first toy was a box of transistors(晶体管).

    Ann's prize includes $ 25,000 and a "once in a-lifetime expericnce" from Google for her Hollow Flashlight, which has no moving parts or batteries.

    The idea for the invention came from seeing unwanted batteries and her friend's experience. When Ann visited a friend in the Philippines, she saw the friend couldn't study when it became dark because there was no electricity or light. She saw the need for a flashlight that has no batteries - Hollow Flashlight.

    In her project, Ann wrote "I made two flashlights that do not use any batteries or harmful materials. They do not create any noise and will always work. The flashlight needs at least a 5℃ temperature difference between the holder's body and the environment around to produce light."

    A video of Ann explaining how she creatcd the flashlight has been watched more than 1.4 million times on the Internet.

    Though Ann was successful, she has not made a decision about her career path. Ann hopes that she can find a way to join her love of film and science together.

    The four winners were chosen from 15 final competitors from eight countries. The competition attracted thousands of students in 120 countries.

    July is the time for some students to say goodbye to their mother schools. Every time it comes, I will think of my old deskmate, Xiaowei. She is the most unforgettable classmate in my junior high school life. It has been many years since I graduated, but she is still in my mind clearly.

    Xiaowei was a lovely girl with long black hair. On hot days, her hair was sometimes seen to be tied up. She was always wearing a sweet smile. She was an artistic(文艺范的)girl who showed up before me every day. She loved reading novels and drawing.

    She liked reading different kinds of novels, especially on history. She could finish reading a historical novel as thick as our Chinese textbook at an amazing speed.

    Whenever she had free time, she would take out a drawing note and start drawing cartoons with a pencil. She drew from characters' heads to eyes and to faces, but the characters were always long-haired and wide-eyed. One day I couldn't help asking," Why don't you colour them?" She answered simply, "Because I don't have enough time." She kept her works as a secret and never talked about them with others. When we were told that she had won a prize in the drawing competition in her group, my classmates felt surprised.

    There is a folk song called My Old Deskmate, which is sung widely among people of different ages. It was created because the creator, Gao Xiaosong, had never forgotten his deskmate. Whenever I hear it, I will think of Xiaowei. How are you, my old deskmate?