根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    After their 15-year-old pet dog died, Rain and his wife, Ann, looked for months to find the right new pet. "I love dogs." said Rain, a worker at a health club in New York. "I can't 1 not having one.

    "Finally, the couple found a lovely young 2 and decided to 3 him home. They named him Little Sheep. Little Sheep quickly made himself at home, sleeping on his new 4 bed at night.

    With heart disease for 25 years, Rain 5 look his medicine four times a day and always had no problems. 6 on March 17, he took the wrong amount(数量) of medicine before he went to sleep. When he got out of bed to 7 the bathroom at night, suddenly, he felt his heart beating fast and later fell to the floor heavily.

    "Little Sheep was usually very 8 and well-behaved," said Ann. "But when my husband hit the floor, the dog gave a loud cry like a wild animal. I was woken but didn't know what was happening. Then l saw my husband 9 on tile bathroom floor. I ran for the 10 and called a hospital at once. "Rain spent several hours in the hospital. By 6:30 a. m., he had been 11 enough to go home. "It surprises me that Little Sheep has such great 12," said his thankful owner. "He's becoming a calm little gentleman. We can walk him on our street, unleashed(未拴住的), without any problem. He's got a lot of 13 now, and everyone wants to 14 him kindly. "

    "We feel the name Little Sheep is not good enough," said Rain. "So now we call him Big Hero, more 15 for an animal of his ability. "

    Justin Bieber is a very famous singer. He is famous all over the world. He was born in Canada 1 March 1st, 1994. He is about 1.75 metres 2. What's his favourite 3? It is purple. He has many hobbies. He likes 4 a car and playing basketball very much.

    Justin Bieber likes music very much. And he is 5 at singing and dancing. He is 6 good at playing the instruments, such as the piano, the guitar and the 7. Justin has three albums (专辑) and each of them is 8.

    Now Justin has a new haircut (发型). He cuts his hair and 9 his hair online. One of his fans buys his hair for $40，000. Justin wants to use the 10 to help the wild animals. His idea is great!

    My father was a self-taught mandolin(曼陀林琴) player. He was one of the best players in our town. He could not 1 music. but if he heard a tune(曲子) a few times, he could play it, When he was young, he was a 2 of a small country music band. They played at local dances and the radio station.

    At home Dad often took out his mandolin and played for the family. We three children sang along.3 played the mandolin like my father. He could 4 your heart with the music that came out of that old mandolin, He seemed to shine when he was playing. You could see his 5 in his ability to play so well for his family.

    But Dad had to find another 6 in a factory later because the money he made at the band wasn't enough to 7 the family. Unluckily, he had an 8 one day and lost one finger, He couldn't play as 9 as before. From then on, every time we asked him to play, he would make up reasons to 10 down our request. However, we missed his performance so much. 11, he agreed and said, "Okay, but remember, 1 can't hold down on the strings(琴弦) the way I 12 to."

    When he played the old mandolin, it carried us back to a 13 ， happy time in our lives. Dad was that kind of man. 14 was what he was doing all his life. If he could give to 15 others, he would, especially his family. He was always there. sacrificing(牺牲) his time to see that his family had enough in their lives.

Bill is a thirteen﹣year﹣old boy. He is very 1 . He can easily work out all the2 problems. 

One day， 3 his way to school，Bill saw a poster at the gate of a 4 shop. It said，"Apple：six for five cents（分）. "Bill suddenly got an 5 ，so he went into the shop. 

"How 6 are the apples？"He asked the shop assistant. 

"Six for five cents. "

"Well，if six apples are worth（值） five cents，three apples are worth about two cents，two apples are worth one cent and then one apple is worth 7 . I only want one apple，so there is no need for me to pay you. "

Bill 8 out a good apple and began to eat it. And he walked out of the store9 . The man was so surprised that he could not even10 a word. 

It was a week before I saw Captain Nemo again. Every morning, I noticed fresh air coming into the rooms and I knew that the Nautilus had come to the top. I would go out and see the sunrise.

 Then I received a note from Captain Nemo. He invited me and my friends to go hunting with him in the forests of Crespo Island. Ned was excited because he thought there he could find a chance to run away. When I saw Captain Nemo the next day, I asked him why he was so interested in Crespo Island. "I thought you preferred the sea. "

"I do," replied the Captain. "But these forests are under the sea." During breakfast, he explained, "I have made diving suits that used special air tanks before I sent you the note. These tanks would allow us to stay under the water for ten hours. Wonderful, isn't it?" He said he had also made lights that worked in electric batteries. When Ned realized that we were not going onto land for our hunting trip, he decided not to come at all.

 Conseil and I put on our diving suits, and so did Captain Nemo and one of his men. We stepped into a room and closed the door. The room was filled with water, and another door opened. We went through it, and we were on the sea floor. It was an amazing experience.

 We were about ten metres under the water. The light from the sun reached us. Everything looked very colourful. We walked over the fine sand and enjoyed the colours of the shells, fish and seaweed (海草). Conseil and I followed Captain Nemo and his man as they crossed a large grassy area. We were going deeper and deeper.

 As we were a hundred metres under the water, we could still see quite well. Captain Nemo stopped and pointed to some dark shapes. This was the forest. The"trees" there were giant seaweed, and all their branches were vertical(垂直的). We could not stop looking at them. Fish swam around the branches like birds in a forest. Small bushes grew under the large seaweed trees.

 Three hours later, we lay down to rest. I was not hungry, but very sleepy. We all slept, and when we woke up, we explored further.

(Excerpted from Twenty Thousand LeaguesUnder the Sea)