阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Actually, long-distance bicycle camping is one of the most pleasurable activities I have ever experienced.

    I generally sleep poorly at night, but in the woods on a tour, I sleep like a baby, falling asleep with the music of insects. In the morning, I am awakened by the cheeps of birds. I eat a snack before getting up, and then I quickly pack my sleeping bag, air mattress (垫), tent, and other things and get on with my road. I'm slower in the morning, having less speed but a greater desire to stop at pleasant spots and enjoy the beautiful scenery. Traveling by bike allows me to stop anywhere, such as grasslands, lakes, woods, and scenic spots. Near lunch, I find a small grocery and buy some bread, sandwiches and fruit. Then I will find a town park or other shady spots to wait out the high mid-day sun. In the afternoon, my speeds are higher, and I spend less time on stops. In the late afternoon, I start riding more slowly, and I start thinking about where I will stop. I finally find a place in the early evening, cook a simple meal and have a rest. As it starts to get dark, I put up my tent, crawl in and fall asleep.

    There are exciting times and difficult times as well. Visiting strange or famous places and accomplishing goals are always exciting to me. I meet and talk with interesting people along the way, sometimes other traveling cyclists. Appreciating beautiful views, meeting wild animals, and traveling up and down hills also. On the other hand, I may run into a rainy or hot spell(一段时间), have to repair my bike, or just find myself in a bad mood. The problems are infrequent and are easy to deal with. The pleasures remain in my mind for years.

    Charlie studied in a famous college for four years. He studied hard and did well in all his subjects. He hoped to become a good teacher. This year he left the college and began to work in a middle school. He likes his students and is strict with them. He does his best to make his classes lively and interesting.

    One day he carefully explained a chemical reaction to the students of Grade 2 in the chemistry lab.

    “Be careful, everyone,” he said loudly. “Before I make the experiment, there're twenty five atoms of carbon (碳原子), but after I finish it, there're twenty four atoms of carbon left!”

He stopped to watch the classroom and hoped his students would go on explaining it. But the young men looked at each other and nobody answered him. He had to ask,

    “What happens? What makes the atom lost?”

    The classroom was very quiet and none of the students looked at their teacher.

    “Who can tell us where it has gone?”

    Suddenly a soft voice came from the back row, “We did not see anybody leave the lab!”

    Mr. and Mrs. Gordon were sitting on the sand, reading their magazines. Mr. Gordon was too stingy (吝啬的) to rent (租) a chair. Their twelve-year-old daughter, Sandra, was playing at the water's edge. Suddenly a huge wave lifted Sandra up and carried her out to sea. Fortunately, a lifeguard (救生员) was on duty and he saw the wave carry Sandra away. He ran along the beach and dived into the sea. He swam quickly to where the girl was, with her head only just above the water, was shouting for help. She was very frightened. When the lifeguard reached her, she struggled with him, as drowning people often did. However, he was a skillful lifeguard and quickly took hold of her and swam with her back to the beach. By the time he reached it, Mr. and Mrs. Gordon had realized what had happened. They had run down to the water's edge. Neither of them could swim. They just stood in the shallow water, and worried about their daughter. Had the lifeguard reached her in time? Fortunately, he had. “That was quick work, young man,” Mr. Gordon said. He turned to his wife, “Give the lifeguard a dollar.” “A dollar!” Sandra cried. “Dad, how can you give him a dollar! He saved my life. I was half dead.” “Quite right, girl,”Mr. Gordon said, pleased by his daughter's awareness of the value of money. He turned to his wife again and said, “She's right. She was only half dead. Give him fifty cents.”

    Stars blazed(猛烈地燃烧)in the sky above Spook like a million tiny suns. They shone through the mists, which had during the last year become thinner and weaker. At first, he had thought the world itself was changing. Then he had realized that it was just his feeling. Somehow, by burning tin in his body for so long, he had permanently strengthened his senses to a point far beyond what other Allomancers could attain.

    The burned tin had begun as a reaction to Clubs's death. Spook still felt terrible about the way he'd escaped, leaving his uncle to die. During those first few weeks, Spook had burned his metals as almost a self-punishment he'd wanted to feel everything around him, take it all in, even though it was painful, or perhaps because it was painful.

    But then he'd started to change, and that had worried him. But, the crew always talked about how hard Vin pushed herself. She rarely slept, using pewter(白镴)to keep herself awake and alert. Spook didn't know how that worked he was no Mistborn, and could only bum one metal but he figured that if burning his one metal could give him an advantage, he'd better take it, because they were going to need every advantage they could get.

    The starlight was like daylight to him. During the actual day, he had to wear a cloth tied across his eyes to protect them, and even then going outside was sometimes blinding. His skin had become so sensitive that each little stone in the ground felt like a knife jabbing(猛刺)him through the bottom of his feet. The cold spring air seemed freezing, and he wore a thick cloak(斗篷).

    However, he had concluded that these discomforts were small prices to pay for the opportunity to become whatever it was he had become. As he moved down the street, he could hear people turning over and over in their beds, even through their walls. He could sense a footstep from yards away. He could see on a dark night as no other human ever had.

       ①   Always before, he'd been the least important member of the crew the dismissible boy who served as a handy man or kept watch while the others made plans. He didn't feel annoyed with them for that he'd been right to give him such simple duties.   ②    Because of his street dialect, he'd been difficult to understand, and while all the other members of the crew had been carefully picked, Spook had joined through the back door since he was Clubs's nephew.

    Spook sighed, sticking his hands in his trouser pockets as he walked down the too-bright street. He could feel each and every thread of the cloth.

    Dangerous things were happening he knew that: the way the mists lasted longer during the day, the way the ground shook as if it were a sleeping man, periodically(周期性地)suffering a terrible dream. Spook worried he wouldn't be of much help in the critical days to come. A little over a year before, his uncle had died after Spook fled the city. Spook had run out of fear, but also out of a knowledge of his lack of power.   ③    He wouldn't have been able to help during the campaign.

    He didn't want to be in that position again. He wanted to be able to help, somehow. He wouldn't run into the woods, hiding while the world ended around him. He was sent to gather as much information as he could about the Citizen and his government there, and so Spook intended to do his best. If that meant pushing his body beyond what was safe, so be it.

    He approached a large crossing. He looked both ways down the intersecting(交叉的)streets the view clear as day to his eyes. I may not be Mistborn, and I may not be emperor, he thought. But I'm something. Something new. Something people would be proud of Maybe this time I can help.   ④    

    The fridge is considered necessary. It has been so since the 1960s when packaged food list appeared with the label: "Store in the refrigerator."

    In my fridge less Fifties childhood, I was fed well and healthy. The milkman came every day, the grocer, the butcher, the baker, and the ice-cream man delivered two or three times each w eek. The Sunday meat would last until Wednesday and the bread and milk left became all kinds of cakes. Nothing was wasted, and w e w ere never troubled by rotten food. Thirty years on, food deliveries have stopped, and fresh vegetables are almost impossible to get in the country.

    The invention of the fridge contributed comparatively little to the art of food preservation. Many well-tried techniques already existed — natural cooling, drying, smoking, salting, sugaring, bottling...

    What refrigeration did promote was marketing — marketing hardware and electricity, marketing soft drinks, marketing dead bodies of animals around the world in search of a good price.

    Consequently, most of the world's fridges are to be found, not in the tropics where they might prove useful, but in the rich countries with mild temperatures where they are climatically almost unnecessary. Every winter, millions of fridges hum (make a low continuous sound) away continuously, and at vast expense, busily maintaining an artificially-cooled space inside an artificially-heated house —while outside, nature provides the desired temperature free of charge.

    The fridge's effect upon the environment has been clear, while its contribution to human happiness has been unimportant. If you don't believe me, try it yourself, invest in a food cupboard and turn off your fridge next winter. You may miss the hamburgers, but at least you'll get rid of that terrible hum.

    Chrysanthemums (菊花) are to the fall what tulips are to the spring.

    In ancient China chrysanthemums (or 'mums' for short) were first planted thousands of years ago. People chose the chrysanthemum as their Flower for October a symbol of the rest and ease that followed the season's final harvest. Then they symbolized a scholar in retirement (隐居) and were one of the four noble(高贵的) plants along with bamboo, the plum flower(梅) and orchid(兰).

    The Japanese hold the chrysanthemum as a symbol of the sun. They consider the orderly unfolding of its petals(花瓣) to be a symbol of perfection. They also think that a single chrysanthemum petal placed in the bottom of a wine glass encourages a long and healthy life. The Japanese even have a National Chrysanthemum Day on September 9 known as the Festival of Happiness.

    In the United States during colonial times its popularity grew such that mums now reign as "Queen of the Fall Flowers." Mums remain the most widely grown pot plant in the country and the largest commercially produced flowers. Chrysanthemums generally represent cheerfulness and rest. So they are welcomed throughout the British Isles and North America for any occasion such as football games and parties.

    In other countries such as Italy Belgium and Austria however their association with the dead makes chrysanthemums acceptable only for funerals and graves.