These days when someone says a computer has a bug in it, usually they mean that there's a problem with one of its programs. Maybe your computer has crashed(死机) _______you were in the middle of a game. But back in the early days of computers, a woman named Grace Hopper was part of the team that _______the very first computer bug.

Hopper was a mathematician. She worked for the navy to help program the new Mark II computer. The Mark II's job was to quickly_______ the math problems that ships and airplanes used to find their way. The Mark II worked by reading_______ from a long strip(长条)of paper with holes punched in it. The computer _______the patterns of holes into the math problems it was supposed to solve.

One afternoon in 1947 Hopper and her team were running a program. But the computer wasn't giving them the_______results. What could be wrong? They finally _______ up taking the Mark II apart, looking for problems. What did they find?

It was a dead moth (飞蛾)!The moth was blocking some of the_______on the paper strip —no wonder the computer didn't know what to do. Hopper knew that the word "bug" had been used before when there were _______with machines. But this was the________time a computer had ever had one. And it was funny that it was a________bug.

Hopper's team ________a logbook(航海日志)of everything they did.   They taped(粘贴)the moth________the page for that day. The logbook, moth and all, is now in the Smithsonian Museum of

A young man went to see a wise man, saying that after graduation, he set goals for himself, but years later he still achieved nothing. The wise man was reading in the small house by the river, when the young man found him. With a smile, the wise man heard the young man 's words, and said to him, "Come to help me boil a pot of water first!" The young man saw a big pitcher 水罐) standing in the corner, next to a small fire stove(炉子),but he found no firewood in the stove, so he went out for it.

He came back with some dead wood, filled up the pot with water and put on the stove. He put some firewood in the stove and burned up, but because the pot was too large, when the wood burned out, the water did not boil. Then he ran off to get firewood.   When he went back, the water had nearly turned cold.   This time he became smart, so he was not eager (急切的)to light the fire, but went out to look for some firewood again. Because the firewood was well prepared, the water boiled pretty soon.

The wise man suddenly asked him, "If there is not enough firewood, how should you boil the water?"   The young man thought for a moment and shook his head. The wise man said, "If so, pour out some water of the pot!" The young man nodded thoughtfully. The wise man continued, "You had so many things you want at first and set too many goals, just as the large pot was filled with too much water but you didn't have enough firewood, so you couldn't boil water, and if you wanted to make the water boil ,you’d better empty some of the water. The young man saw his light suddenly. When he went hack he removed many listed goals from his plan, leaving only a few recent ones, while with the snare time he studied all kinds of hobbies. A few years later, his goals came true.

When you see flowers for sale, do you ever think of how they got from where they were grown? In most cases, they were grown in another country and imported to a big market in the Netherlands (荷兰),which sells 80 percent of the flowers and plants in the world. After they are traded there, they are exported again by plane all over the world.   Eventually, they come to your town or city.

Since the 1500s Netherlands has been famous for growing and selling plants. In 1592,the first tulip (郁金香)bulb was imported to Netherlands from Turkey and tulips quickly caught on. As a matter of fact, some people struck it rich with tulips. Just one tulip bulb was worth as much as a house in Amsterdam!

These days, the nation is still famous for its tulips and many other kinds of flowers as well. Many kinds of flowers are grown in greenhouses that are heated and lit so it's summer all year inside. In addition, millions of flowers arrive by plane every day at Amsterdam Airport. The center of the flower industry is the Aalsmeer Flower Auction located near the airport, about 16 kilometers from downtown Amsterdam. Every year, three billion flowers and 400 million plants are traded here. They come from 8,000 growers in places like Kenya, Ecuador and Indonesia.   In an auction, buyers try to get the best flowers for the lowest prices so they can make a profit. At Aalsmeer, the prices start high and decrease. You have to watch out because it happens very quickly. The first person to press a button gets the plants at that price. As a rule, it only takes seconds to sell bunches of flowers, especially those in high demand.   six hundred groups are sold each hour, so you have to decide what price you will payin a hurry. As soon as beautiful roses catch your eye, you must act. The next time you admire a bunch of roses, think about the adventure that the flowers have had.   Where they came from may remain a mystery, but they almost certainly had a brief stop at Aalsmeer.

One of life's great treats, for a lover of books( especially fantasy books),is to open a cover to find a map secreted inside and filled with the details of a land about to be discovered.   A writer's map shows a fully imagined world. A new book, "The Writer's Map," contains dozens of the magical maps that writers have drawn or that have been made by others to explain the places they've created. " All maps are products of human imagination, "writes Lewis Jones, the book's editor." For some writers making a map is absolutely central to the skills of shaping and telling their tale."

The book includes the map from Thomas More's "Utopia", which were published in 1516 and contained the first fantasy map in a work of fiction, as far as anyone can tell. The book also has the maps that remind fantasy —filled childhoods: Middle Earth, the mystenous Narnia, the Hundred Acre Wood,etc.   But there are more maps of private treasures here. too. Among these maps, the one for. "Treasure Island" is a landmark," one of the most typical literary(文学的) mans of all "Lewis Jones writes. It comes up more than once in the book's reviews, which are written by writers and mapmakers. Robert Stevenson first sketched the map in 1881 for his son, and a red X marks the place where treasure was buried.

For many writers, mapmaking is a practical work that pulls them into their own work. “ I always draw my way into stories," writes Abi Elphinstone, the author of the "Dreamsnatcher" books. “ I begin every story I write by drawing a map because it helps me know where my characters move next. Also, making maps is fun." Mapping does have problems. Frances Hardinge, a British children's book writer, explains the worlds she dreams up are"unmappable." A map helps shape a reader's idea of a fictional Place, but it may limit the readers' imagination.

Jaden Smith was born on July 8,1990. He is a kind actor, dancer and rapper. He is also    61    for being the youngest son of superstar actor Will Smith. However, he is becoming more and more known for his own     62     and acting skills now,

The Pursuit of Happiness was Jaden’s first big role. He     63     his dad's son in the movie. Both Jaden and his dad received a lot of praise     64     the movie was a success. Later in 2010, Jaden played with Jackie Chan in the movie The Karate Kid.

Jaden has a brother and a sister. His sister     65     does some acting. They want to be excellent actor and actress in the future.

Wang Mengqiu, the inventor of Hover Camera（ 无人相机).was born in Guangzhou in 1982.He once    66     at Stanford University in the US. He became famous overnight because of the invention.

Compared to other cameras, Hover Camera has many advantages. It can fly and stay in mid -air, track(追踪)your face and even follow you to make sure it    67     the perfect picture. What's more, it can     68     by using a smartphone. So, it is the best choice for weddings, sports games and holidays.

It's reported that the company     69     25 million to produce it by now. As it is still being tested, Hover Camera can be bought later this year. The price has not yet been decided. But a spokesman says the company hopes    70     it for less than $600.

Many of you may know that Jakarta is the capital city of Indonesia.    81    Last month, Indonesia said that the country would move its capital from Jakarta to Kalimantan. This is big news for Indonesia.

The word capital comes from the Latin word "caput", meaning "head". It is no doubt the "head" of a country. The central government and important institutions (机构)are put there.     82     In English -language news reports, when you read "relations between Beijing and Moscow" ,it actually means "relations between China and Russia".    83     Therefore, it is important to choose a good place for one's capital. In many countries, the capital is the richest city. This is because when a city becomes an important business center, it takes on a more important place around the world.

London, for example, has been the economic(经济)center of Britain for nearly 2,000 years, so people naturally chose it as the capital.     84    For example, Brazil's capital used to be Rio de Janeiro, which is a coastal city. Later the capital moved to the island city of Brasilia, partly because coastal cities can be attacked( 攻击) more easily.

In the case of Indonesia, the new capital was chosen in order to achieve development in different areas.     85     By becoming the new capital, it can expect faster economic growth.