請依下文回答第 46 題至第 50 題       Nikola Tesla, a Serbian-American who emigrated to New York City in 1884, was a scientist and visionary whodeveloped the basis for alternating current (AC) that most of us use today and pioneered numerous technologies that improveour everyday lives. Without his contribution to the AC electric power, we would be fifty years behind technologically thanwhere we are today.       In 1884, Tesla left Europe and worked for Thomas Edison, the developer of direct current (DC). It was said thatEdison promised Tesla $50,000 to fix the problems with his DC system. When Tesla succeeded and demanded his reward,Edison claimed the offer was a joke, saying “When you become a full-fledged American, you will appreciate an Americanjoke.” This prompted Tesla to quit and he ended up in a battle with Edison. Today, Tesla’s AC system is predominantly usedto power most of the world’s electricity. DC motors are still used for some industrial machines, but often require moremaintenance.          It is not just AC power that Tesla worked on. Motors, radios, X-rays, neon signs were advanced by his extraordinarymind. History often touts Italian entrepreneur Guglielmo Marconi as the inventor of radio, but actually he was usingtechnology from seventeen of Tesla’s patents. The two inventors became embroiled in a patent war. In 1943, the UnitedStates Supreme Court revoked Marconi’s radio patents in favor of Tesla. Unfortunately, Tesla and Marconi had alreadypassed away by the time the court handed down their decision.       Tesla also invented one of the world’s earliest remote control and was a pioneer of X-ray technology. He took someof the first X-ray images of the human body and was one of the first scientists to hypothesize that X-rays could be harmful.The brilliant inventor contributed to reusable energy as well. Nine out of the twelve patents used to build the world’s firsthydroelectric station, erected at Niagara Falls, New York, belonged to Tesla. He helped pave the way toward clean energybecause he understood the physics behind energy and what might be possible in the future.       Often referred to as “the man who invented the 20th century,” Tesla was involved in many more discoveries andcreations. When he died in 1943, there was so much interest in what he was working on that the Federal Bureau ofInvestigation (FBI) raided his hotel room within hours of his death. Experts say Tesla envisioned his inventions improvingpeople’s lives. Indeed, his innovative ideas were milestones of technology. The great pioneer believed “Invention is themost important product of men’s creative brain.”
【題組】46 What is the passage mainly about？
(A) The battle between Edison and Tesla.
(B) Tesla's inventions that shaped our lives.
(C) The influence of Tesla on modern scientists.
(D) Tesla's famous patents and industrial revolution.