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    B What opinions did experts have about movements and transportation throughout history? Take a look. Lord Kelvin, a famous scientist,1800s Opinion: Airplanes would never fly. Was he right? No. On December17,1903, the Wright brothers made the first controlled flight in a powered airplane. Lee Deforest, a pioneer in radio , TV and Radar, 1900s Opinion: No person would ever reach the moon. Was he right? No. On July20,1969, Neil Armstrong stepped onto the moon. Jules, Verne, Science fiction writer ,in an 1870 novel Opinion: People would be able to travel under water in airtight ships. Was he right? Yes. Through submarines already existed, it would be decades before they could stay submerged for long-distance travel. Leonardo da Vinci, artist, inventor ,1400s Opinion: People would fly in a machine with an overhead propeller. Was he right? Yes. This artist’s sketch, made about 1490,shows a helicopter 400 years before its invention. 28. Which of the following experts was a science fiction writer? A. Lord Kelvin B. Lee Deforest C. Leonardo da Vinci D. Jules, Verne 29. Leonardo da Vinci’s opinion was that . A. airplanes would never fly B. no person would ever reach the moon C. people would fly in a machine with an overhead propeller D. people would be able to travel under water in airtight ships 30. How many experts’ opinion proved right according to the passage? A. One B. Two C. Three D. Four 【查看更多】

     

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    What opinions did experts have about movements and transportation throughout history?
    Take a look.
     
     
    【小题1】Which of the following experts was a science fiction writer?

    A．Lord Kelvin B．Lee Deforest C．Leonardo da Vinci D．Jules, Verne
    【小题2】 Leonardo da Vinci’s opinion was that _________.
    A．airplanes would never fly
    B．no person would ever reach the moon
    C．people would fly in a machine with an overhead propeller
    D．people would be able to travel under water in airtight ships
    【小题3】 How many experts’ opinion proved right according to the passage?
    A．One B．Two C．Three D．Four

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