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With the development of science and technology, our life is becoming more and more convenient. It seems that （1） has been reinvented and greatly improved. But there is one thing unlike them. It’s a blind walking stick. It was invented over 100 years ago and has been used （2） many blind people for a long time. However, it had remained unchanged until an engineer named Kursat decided （3） a change. Kursat is blind. He deeply understands the difficulties and challenges that the blind face. He put some technical knowledge into his invention and invented a （4） stick. He hoped his invention would help the blind.

The smart stick uses built-in speakers and different sensors（传感器）to warn about possible dangers. It helps blind people know about the environment around （5） by using modern technology. It makes their travel much （6） than before. The stick is priced at around ＄500. It is less than half the price of most smart phones. Most people can （7） it.

In the future, this invention is going to make a big difference to more blind people. “It will not （8） change my life, but also the life of other people.” Kursat said, “These days, we are talking about flying cars, but the blind have been using just simple sticks. As a blind person, （9） I am at the subway station, I don’t know which is my exit. I don’t know which bus is coming or which stores are around me. But now, the smart stick can provide a lot of （10） for the blind,” he said, “I believe the life of the blind will be much more convenient and safer.”