True, This invention is one of the most important medical discoveries of the 20th century., These machines became much faster than humans at calculations., This energy source produces less pollution than coal., This invention made communication much easier than before., These became the fastest way to cross oceans., False, This is the more important medical discovery of the 20th century., Computers are more faster than calculators., Nuclear power produces the least pollution than coal., Mobile phones are one of the usefulest inventions., Commercial aeroplanes are the faster way to travel.

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