How many languages did Stephen Hawking know?

What element has a name that comes from the goddess of the moon? The most abundant metallic element on earth? What masses of the filaments known as a hyphae called? Why short day plant that can be found near the highway might not produce any flowering response? What is characteristics of Amoebozoans Physarum? How are atoms and molecules affected by chemical reactions? How many ways can rubbing alcohol be used? Asthenosphere what does it mean? Why won't my left pinky stop spasming and moving side-to-side? What regions do most earthquakes occur in? What are three things a cell does during interphase? When Atrial natriuretic peptide is elevated what does it cause? When is the temperature in an area most likely to rise? How does the two main subdivision of the nervousness system work together to control the body? Can you take butane gas curlers on a plane? How long can a flamingo hold their breath for? What only takes place in reproductive organs mitosis or meiosis? How was the economy under Augustus Caesar? What happens when you mix 7 up and salt? How does frog take oxygen and refuse carbon dioxide?

How many languages did Stephen Hawking know?