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Modals for Deductions

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    True or False
  •   Study   Slideshow
  • The Eiffel Tower is in London.
    It can’t be true; the Eiffel Tower is in Paris.
  •  15
  • The Earth has one moon.
    It must be true; we see one moon in the sky.
  •  15
  • Humans can breathe underwater without equipment.
    It can’t be true; humans need oxygen to breathe.
  •  15
  • Mount Everest is the tallest mountain in the world.
    It must be true; it’s well known as the tallest mountain.
  •  15
  • The Amazon Rainforest is located in Africa.
    It can’t be true; the Amazon is in South America.
  •  15
  • Australia is both a country and a continent.
    It must be true; Australia is both.
  •  15
  • Penguins can fly.
    It can’t be true; penguins are flightless birds.
  •  10
  • Elephants are the largest land animals on Earth.
    It must be true; elephants are huge animals.
  •  10
  • Kangaroos live in Africa.
    It can’t be true; kangaroos live in Australia.
  •  10
  • Leonardo da Vinci invented the telephone.
    It can’t be true; Alexander Graham Bell invented the telephone.
  •  15
  • Cleopatra was the last queen of ancient Egypt.
    It must be true; Cleopatra was famous as the last pharaoh.
  •  15
  • Napoleon Bonaparte was from Spain.
    It can’t be true; Napoleon was from France.
  •  15
  • Water boils at 100°C at sea level.
    It must be true; this is a well-known fact.
  •  10
  • The human body has three lungs.
    It can’t be true; humans have two lungs.
  •  10
  • All metals are magnetic.
    It can’t be true; not all metals are magnetic.
  •  10
  • The sun is a planet.
    It can’t be true; the sun is a star, not a planet.
  •  10