Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back. Plants certainly cannot run away, and they have no teeth or claws. But plants can protect themselves in both physical and chemical ways.

    Some plants have their own ways to keep animals away. For example, the leaves of the holly(冬青) have sharp prickles(刺) that discourage grass-eating animals. Holly leaves on lower places have more prickles than leaves on upper places. This is because the lower leaves are easier for most animals to reach. Some plants, such as the oak trees(橡树), have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material, and eating such grasses wears down the animals' teeth. Many plants also have chemical defenses. Some plants produce chemicals that taste bitter(苦) or cause an unpleasant reaction. Some plants may fight against an attack by increasing the production of these chemicals. When a worm bites a tobacco leaf (烟叶), the leaf produces a chemical smell. Many plants depend on both physical and chemical defenses. A certain plant in China, for instance, has prickly leaves, and each prickle has poisonous water(毒液). Only one experience with this kind of plant will teach an animal to stay away from it in the future.

Flossie may be the most popular teacher at Hylands Schoolin Essex, UK. Everyone 1hereven though she2talk.In fact, Flossie is a 10-month-old 3.

4does Flossie help in class? On workdays , she 5 twoor three hours listening to students read at the school6. Foreign language classes have becomemore 7because students learn dog commands (命令)in French andSpanish. Flossie 8helpswith road safety skills9studentstake walks with her. And teachers use her calm nature(天性) to help students not to be 10animals.

Studies show that children feel better when they11 topets. So the school 12 the dog to help13read. Flossie is a special dog. She goesto Sunday training (训练) classes and is one of the top14"Reading to her could help becauseshe doesn't make15comments(评论) like people do," said student Jacob Wicks.

A little boy invited his mother to attend his school's first teacher-parent meeting. To the little boy's 1 , she said she would go. This 2 be the first time that his classmates and teacher 3 his mother and he felt4 of her appearance. Although she was a beautiful woman, there was a severe scar（疤痕）5 nearly the entire right side of her face. The boy never wanted to 6 why or how she got the scar.

At the meeting, the people were 7 by the kindness and natural beauty of his mother 8 the scar, but the little boy was still embarrassed（尴尬）and 9 himself from everyone. He did, however, get within 10 of a conversation between his mother and his teacher.

The teacher asked 11 , "How did you get the scar on your face?" The mother replied, " 12 my son was a baby, he was in a room that caught fire. Everyone was 13 afraid to go in because the fire was 14 , so I went in. As I was running toward his bed. I saw a long piece of wood coming down and I placed myself over him trying to protect him. I was knocked 15 but fortunately, a fireman came in and saved both of us." She 16 the burned side of her face. "This scar will be 17 , but to this day, I have never 18 what I did."

At this point, the little boy came out running toward his mother with tears in his eyes. He held her in his arms and felt a great 19 of the sacrifice（牺牲）that his mother had made for him. He held her hand20 for the rest of the day.

 Last Sunday evening, my parents went out for a walk with my sister. But I studied alone at home because I would have an English test. Suddenly, I saw bright light in my neighbor's kitchen. I thought he was cooking, so I went on studying.

Soon, there was a terrible smell in the air and I thought something was wrong. I went out and saw fire coming out of my neighbor's kitchen. So I shouted" Fire, Fire!" But no one heard or came out.

I ran quickly to my house to call 911, and then I rang my neighbor's doorbell, knocked at the door, but there was no response. I got into the house through the window and found my neighbor sleeping in his bedroom. I woke him up and we rushed out of the house together.

We tried our best to pour water through the kitchen window, but the fire was too heavy. Luckily, the firemen came and put out the fire quickly. When my parents came back, they found I was dirty and tired. After my neighbor told them the whole story, they were happy and said I was a brave boy.

When she was just 10 years old, Angela joined in her first piano competition. She never expected she could get something {#blank#}1{#/blank#} (important) than a prize. 

On that day, each {#blank#}2{#/blank#} (perform) had to play a piece of music in front of a large group of people. At first, Angela was {#blank#}3{#/blank#} (excite). But when she was about to play, she {#blank#}4{#/blank#} (feel) afraid. "What should I do if I forget the notes (音符)? What should I do if I play the wrong notes?" Angela thought. 

As these worries ran through {#blank#}5{#/blank#} (she) mind, a girl finished her performance and walked past her. She did something unexpected. She smiled (微笑) at Angela {#blank#}6{#/blank#} gave her a thumbs-up sign. That made Angela feel encouraged. Then she walked over to the piano and played a piece of music {#blank#}7{#/blank#} (beautiful). 

After the competition, Angela planned {#blank#}8{#/blank#} (thank) the girl, but she couldn't find her. She wanted to say, "Your kind smile played an important role {#blank#}9{#/blank#} my life. I'll take that smile as {#blank#}10{#/blank#} great gift. "