What will cars be like in the future? Maybe we can sit in a car that can drive all by 【小题1】（it） in a few years’ time. In fact, with the rapid development of modern science and technology, the self-driving car is becoming a 【小题2】（real） on busy streets.

According to a report by Google, the world-famous search engine, its self-driving cars 【小题3】（travel） more than 700,000 miles on roads in California so far. The first self-driving car 【小题4】（make） by Google came out in 2009. There are cameras on the top of the car, 【小题5】 allow the computer in the car to draw a 3-D map of the surroundings. In addition, Google says that its self-driving cars can discover hundreds of separate 【小题6】（object）at the same time, which might be an improvement on the human driver experience. As 【小题7】 result, there will be far 【小题8】（few） traffic accidents caused by careless driving.

However, self-driving cars are much too 【小题9】（expense） right now. Scientists across the world are doing their best to bring down the costs, 【小题10】 hundreds of thousands of dollars to the cost that most people can afford.

   Two old beggars (乞丐) were sitting on a busy street corner of a big city. They watched _______ as a lot of people walked by without looking at them. Sometimes, a kind-hearted woman or a small child would _______ a few coins in the hats in front of them.

Today was not a _______ day for begging. The men were able to _______ enough for a big meal. As it was getting dark, they started to _______ their things.

Just as they were getting ready to leave, they _______ a man walking toward them. He was a _______ man. They could tell that from his fine clothes. The first beggar said to the second with _______, “He’s coming our way!” The man stopped, _______ into his pocket and took something out. What looked like a piece of hard ________, wrapped (包裹) in white paper, hit each of their waiting hats. The rich man turned and ________ his way.

“He could have easily left us a few ________ or a bill, but he laughed at us with a piece of rock candy,” said the first beggar. He looked at the offering ________. “There’s no way we can ________ this — we have no teeth.” With these words, he picked up the thing and threw it away. Then he collected his things and ________ .

The second beggar wanted to do the same, ________ a second thought made him change his ________.“I haven’t had anything like this for ages,” he thought. “How ________ of that man to offer me something so sweet!” With that, he opened the white paper. To his ________, there was no hard rock candy inside. ________, a shiny white pearl (珍珠) worth thousands of dollars fell into his hand.