阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。

    On that particular day after I finished giving my training course, I took a flight home. Upon1the plane, I noticed a boy who was around eight years old, sitting in the window seat2 mine. Trying my best to be 3, I said “hello” and introduced myself, and he told me his name was Bradley. We started a4 and within minutes, he took me into his confidence, saying, “This is the first time I have ever been on a plane. I'm a little bit 5.” I managed to 6 him.

    As we ascended (上升), he looked out of the window and started describing excitedly everything he was 7. Then he told me he needed to go to the bathroom, 8 I stood up to let him out into the aisle. It was then that I noticed the brace (支柱) on his legs. Bradley, 9made his way down to the bathroom and back. Sitting back down, he 10, “I have muscular dystrophy(肌肉萎缩症), and so does my sister, who's in a 11 now.”

    As we descended (下降), he looked over, smiled, and spoke in a low, almost 12 voice, “You know, I was really13 about who would sit beside me on the plane. I was afraid it would be someone who didn't want to 14 with me. I'm so 15 I sat beside you.”

    16 the whole experience later that night, I was reminded of the17 of being open to the moment. Now when 18 get(s) rough, I look out of the window, try to see what images the clouds are painting in the sky, 19remember Bradley, the beautiful child who taught me that 20.

    Singing or listening to music during math class is usually not accepted. However, in Kurt's classroom, it's not the1 . Kurt is a math teacher in a high school. This former hip-hop artist is using his 2 background to make math a lot easier and less 3 for his students.

    As a child, he had difficulty 4 math. However, as he grew older, he realized that it wasn't completely his 5 and that the traditional education system just doesn't work for all the students. So he decided to come up with a new 6 which would make kids more interested in school. Finally a good idea 7 him.

    With the help of some friends, Kurt 8 60-second math tracks（跑道）. They are given a(an) 9 name, like “Van Guard” and she 10 multiplication tables（乘法表）to hip-hop beats. He also encourages dancing during class, 11 it helps the children get into the mood（情绪）and 12 them in their learning. So far, Kurt has only invented musical materials for the multiplications, but the13 have been so positive that he is now working on new learning materials.

    Even since Kurt 14 hip-hop into the classroom, he has had 15 trouble during class. And attendance（出勤率）is always at 100% and the students' grades have gone up greatly. What's more, the kids 16 love learning math now.

    Kurt wants to 17 the traditional way of teaching, but he's not saying that it doesn't work. It just doesn't work for 18, because not all students learn in the same way. He only 19 to show that we need to keep a(an) open mind when it 20 children's education.

    A 4-year old girl named Norah and her new friend Mr Dan have given us the glimmer of humanity we desperately need right now. A chance meeting in the grocery store pushes the 1 of depression aside and ends up changing a life.

    Norah' mother, Tara Wood, wrote on Facebook that her daughter seemed magnetically 2 to the man when they passed by him at the store. So much so that she stood up in the cart and waved 3, "Hi, old person! It's my birthday today! "

    The man's expression 4 and his face lit up when he realized she was speaking to him. "Well, hello, little lady! And how old are you today?" he asked.

    They 5 for a few seconds and it was super adorable. They continued on their way but a few minutes later, Norah asked if she could hug and take a 6 with the man, whom they now call "Mr Dan". They 7 together and then hugged each other like they were long lost friends.

    When she thanked Mr Dan, Wood received a 8 she wasn't expecting. He shed (流下) tears and said, "No, thank you. This has been the best day I've had in a long lime. You've made me so 9, Ms Norah."

    10 by the encounter. Wood later polled the photos on Facebook and that night received a private message from someone who 11 knows Mr Dan.

    It 12 his wife passed away earlier this year, leaving him in deep 13. The friend said she was sure Norah touched his heart, 14 the chance meeting was something he needed.

    Wood got Mr Dan's phone number and called him a few days laler. They met for lunch the following week and have seen each other on numerous occasions 15— even celebrating his 82nd birthday together.

    "You guys, I cannot 16 the friendship between Norah and Mr Dan. I 17 every time they're together — it's so pure, simple and perfect," Wood wrote.

    Hugs can be physical such as those 18 with an intimate partner, family member or friend; or they can be symbolic such as the 19 that someone needs a word of encouragement or a helping hand. Hugs can be the interweaving threads that 20 the fabric of our communities and our society. Hugs are so powerful that they can shake us to the core and wake up the humanity within.

    "Mom, I don't like you," my two-year-old son said.

    "Okay… is that 1 you love me?" I asked.

    "No, you're not lovely."

    That night, as I washed my face, I 2 a little longer in the mirror—not because I was hurt by his 3, but because I noticed there was no light in my 4.

    I took out a pen and started writing a list—a list to 5 myself; a list to put sparkle（火花）back into my eyes. I once made many lists but 6 accomplished anything. This time would be 7!

    The first goal on my list I wanted to achieve was 8 a Polar Plunge to raise money for the Special Olympics. On that day, when I 9 into my 1980s workout clothes, Jack smiled, "Mom, you look 10." Maybe, just maybe some light 11 my eyes.

    When coming out of the cold lake I felt happy and proud. I kept screaming, "I 12 it !" But one of the most exciting parts of the day was when I stood in front of my 13, which was taped on the refrigerator door. I 14 item number one. With that, I began to take back my life.

    Everyone taking part in the Polar Plunge received a 15. Whenever I wore it, Jack asked, "Is that your Polar Plunge clothing?" I answered 16, "Yes!" "I want to do that too." I was happy he remembered I jumped into a 17 lake, and that he wanted to do activities with me.

    With each 18 crossed off（划掉） the list, a piece of myself is 19. Not only am I showing my family it's important to 20, but I'm showing myself that I'm worth it.

    "A bird with a broken wing will never fly as high." I'm sure that John would agree with this saying, 1 he felt this way almost every day in school.

    By high school, John was the most famous 2 in his town. He was always absent, didn't answer questions and got into 3. He had failed almost every exam by the time he entered his senior year, yet was 4 each year to a higher grade level. Teachers didn't want to 5 him again the following year. John was moving on, but definitely not moving 6.

    I met John for the first time at a weekend leadership training program since John was one of 405 students who 7. At the start of the training, John was just standing 8 the circle of students, against the back wall. He didn't 9 join the discussion groups. But slowly, the interactive games 10 him in.

    The ice really melted when the groups started building a list of 11 and negative things that had occurred at school that year. John 12 some constructive ideas on those situations. The other students in John's group 13 his comments. All of a sudden John felt like a 14 of the group, and before long he was 15 like a leader. By the end of the training, he had joined the Homeless Project team. The other students on the team were 16 with his passionate concern and ideas. They 17 elected John co-chairman of the team.

    John started 18 at school every day and answered questions from teachers for the first time. He led a second project,19 300 blankets and 1,000 pairs of shoes for the homeless shelter from house to house.

    A bird with a broken wing only needs 20. Once healed, it can fly higher than the rest.

A little girl created the perfect Mother's Day gift.It was a drawing of a 1 on white paper with the words "For mom: love, love, love" decorated in hearts.She folded(折叠) her letter,2 then she lost it.

For most people, that would be the 3 of this story,but this story has a different result:James Carrell 4 the letter.He had just 5 his mother, wishing her a happy Mother's Day.After he got off the phone,Carrell saw the 6 on the ground outside of a hardware(五金器具) store in Manvel in Texas, United States."I 7 it was a note" said Carrell."I 8 it and saw the flower and hearts.It 9 .

moved me." Carrell thought the letter would 10 someone's day and maybe he could find the 11 , so he posted it in the Talk of Alvin Facebook group.The message 12 a lot of people, especially one man.

"I was sitting at my friend's house and saw a man 13 ,"said Carrell.

His Facebook comments(评论) included a message from Roberto Alvarado.He wrote, "I can't 14 you found my baby's letter."Carrell reached out to Alvarado to 15 the letter.It took a few days, but the men finally 16 on Thursday night, one day after Alvarado's daughter Natalie celebrated her seventh birthday." 

17 the letter made it home," said Alvarado." We are 18 for what James Carrell did." 

We often forget the power of 19 things,but for this family from Alvin, Carrell's small act left a(n)20 impression(影响).