Born on April 15, 1452, Leonardo da Vinci managed to be so many things in one lifetime-painter, engineer, architect and scientist. His painting, Mona Lisa, is one of the worlds most famous artworks. And that is just the tip of the iceberg. Da Vinci left behind thousands of pages of writings. Leonardo biographer Martin Kemp estimates that there are roughly 6.000 pages known to be Da Vincis work, and these may only be a fraction of what he produced in his lifetime. He wrote in mirror script, which means he started on the right side of the page and moved to the left. Its not known for certain why he did this, but some theories include he was trying to prevent others from discovering and possibly taking his ideas or that it was easier for him to write this way because he was left handed. In any case, depth and breadth of his work is outstanding. What does the idiom the tip of the iceberg mean? Hãy chọn một đáp án: a. Somethings wonderful b. A small part of a much larger thing. c. The greatest thing. d. Somethings huge.