Life is full of surprises and you never know how things will turn out.

    Sir John Gurdon is a good example of this. As a boy, he was told he was hopeless at science and was at bottom of his class. Now, aged 79，the very same Gurdon shared the 2012 Nobel Prize in Medicine with Japanese stem cell (干细胞) researcher Shinya Yamanaka.

    Like so many scientists, Gurdon shows us where the power of curiosity and perseverance(坚持) can lead.

    When he was 15 in 1948，Gurdon ranked last out of the 250 boys at his high school in biology and every other science subject. Gurdon's high school science teacher even said that his dream of becoming a scientist was "quite ridiculous".

In spite of his teacher's criticisms(批评), Gurdon followed his curiosity and kept working hard. He went to the lab early and left later than anyone else. He experienced thousands of failures.

     "My own belief is that we will, in the end，understand everything about how cells actually work，"Gurdon said.

    In 1962, Gurdon took a cell from an adult frog and moved its genetic (基因的) information into an egg cell. The egg cell then grew into a clone of the adult frog. This technique later helped to create the sheep Dolly in 1996，the first cloned mammal(哺乳动物) in the world.In 2006，Gurdon's work was developed by Yamanaka to show that a sample(样本) of a person's skin can be used to create stem cells. Using this technique, doctors can repair a patient's heart after a heart attack."Luck favors the prepared mind," Gurdon told the Nobel Prize Organization. "Ninety percent of the time things don't work, but when they do, you have to seize(抓住) the chance.

    Most people enjoy seeing a film because of its wonderful pictures and fantastic sounds. However, many years ago there were no sounds in the films. So actors had to act by using their body language. Everybody knows Charlie Chaplin, a world-famous funny actor. People everywhere have laughed at Charlie Chaplin's films until tears run down their faces. From his very first appearance they know what will happen. His body language makes people love his films.

    Charlie Chaplin was born in 1889 in London. When he was a child, his family was very poor in 1910, he went to the USA. In 1914 he made his first film. In this film he created the character of a little man who always faced difficulties. When Chaplin was rich, he opened his film company in 1918. He died in 1977.

    The poor man that Charlie Chaplin played in films makes all kinds of stupid mistakes. He is always in trouble, but he never gives up. He dreams of becoming a great man. Even people who don't understand English can enjoy Chaplin's films, because they are mostly silent. It isn't what he says that makes people laugh. His comedy (喜剧) doesn't depend on words. It depends on little actions which mean the same thing to people all over the world. This is the secret of Chaplin's huge success.

    Helen Keller lived in the U.S.A. She was a great woman.

    When Helen was a baby, she got very sick. After many weeks, the doctor said, "She is better, but now she can't see or can't hear." Her mother and father were very sad.

    After a few years, things got worse. There was no way for Helen to speak with other people. She heard nothing. She saw nothing. She didn't understand anything.

    Then one day a teacher came to live with Helen and her family. The teacher helped Helen learn about words. Helen was a very bright child and soon she learned to spell her first word. When she was older, she went to college.

    Helen was very famous. She helped many blind (盲) and deaf (聋) people. She traveled around the world and helped many people.

    Helen was a very old woman when she died. The world remembers her today as a brave and wonderful person. She was blind and deaf, but she found a way to see and hear.

It is windy and {#blank#}1{#/blank#}. People are wearing {#blank#}2{#/blank#} clothes. A boy is  {#blank#}3{#/blank#}to school.

Orion Jean，a little boy in the United States，has a big goal.He wants to s {#blank#}1{#/blank#} kindness to as many people as he can.

It all started in August 2020.Jean r {#blank#}2{#/blank#} ＄500 in prize money after winning the U.S.National Kindness Speech Contest.He could have spent the money on Legos，but he quickly realized that it was not e {#blank#}3{#/blank#} to just speak about kindness.The boy set up the "Race to Kindness" project.

Jean started off by helping children in hospital.Because of the COVID﹣19 pandemic，these children were not able to see their family members very often.Jean wanted to put a s {#blank#}4{#/blank#}on their faces.He used his money to buy as many toys as he could while calling on people to do the same.In only a month，he had c {#blank#}5{#/blank#} 619 toys.The boy sent them to a local children's hospital. "It is one of the best e {#blank#}6{#/blank#} of my life，" he said at the time.

Not long after，in October 2020，Jean s {#blank#}7{#/blank#}the ambitious goal of donating 100，000 free Thanksgiving meals to poor families.With the help of a local charity，he was not only able to reach his goal but to go beyond it.As a book lover {#blank#}8{#/blank#} can change a person's life.Last May，after discovered the f {#blank#}9{#/blank#} that two out of three kids from poor family had no books of their own，they boy decided to collect 500，000 book for them.

Will he t {#blank#}10{#/blank#} a break after this？ "Who knows？Maybe something even bigger will come，" Jean says. "Maybe we'll do a 'race' to a million."

 Today, as I was shopping at Woolworths, a kind worker surprised me with a beautiful bunch of flowers. It was my unexpected act of 1 that let me know the power of simple words.

2 years earlier,I was going through chemo treatment(化疗) and felt3 and down. My husband and children were also bearing a lot. They were busy on weekdays,4 I always stayed at home alone. One thing I could do to help was to order things for daily use5 online click-and-collect services. Before checking out, I would 6 notes for the person who packed (打包) our order-things like"Hope you' re having a good day!" or"Thank you for your hard work."

 Fast forward to today, and I found myself 7 with one of the workers who had 8 our orders in the past. I walked up to her and said, "Thank you so much for what you did! You usually did our orders. You guys are fantastic! " She stopped for a few9 and then asked my name at once. When I told her, she said, "Oh, you are the lady who wrote notes for 10 !" She told me that those little notes truly made their day bright, especially during the 11 times of the COVID-19 pandemic. It was surprising to hear that such 12 acts of kindness could make such a big difference.

 After finishing my shopping, she ran up to me with a bunch of flowers,13 me for brightening their day with my kind words. I14 thought that my simple acts could make a world of difference in someone's day. Even15 as simple as saying" thank you" or leavinga kind note can lift someone's spirits. Three years has passed and it still makes them feel valued and thankful.