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There have been many great inventions for things that changed the way we live. The first great invention was the one that is still very important today—the wheel. This made it easier to carry heavy things and to travel to a far place. For hundreds of years after that, there were few inventions that had as much influence as the wheel.

In the second half of the 19th century, many great inventions were made. Among them were the camera, the light and the radio. These all play a big part in our daily life today.

In the first part of the 20th century, there were many valuable inventions, such as the helicopter (直升飞机) in 1909, movies with sound in 1926, the computer in 1928, jet planes (喷气式飞机) in 1930. This was also a time when a new material was first invented. Nylon (尼龙) came out in 1935. It changed the kind of clothes people wore.

The middle part of the 20th century brought new ways to help people get over illnesses. These new ways could allow people to live longer. By the 1960s, most people could expect to live to be at least 60.

New inventions will some day allow us to do things we have never dreamed of.

【小题1】The wheel was the ________ great invention that is still very ________ today.
【小题2】The wheel made it easier to carry ________ things and to ________ to a far place.
【小题3】The camera, the light and the radio were invented in the ________ ________ of the 19th century.
【小题4】Nylon came out in ________, and it changed the kind of ________.
【小题5】Most people could expect to live to be ________ ________ 60 years old by the 1960s.
23-24九年级上·青海果洛·期末
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