One of the most creative thinkers of all time was Leonardo Da Vinci (1452-1519). In addition to his famous paintings like the Mona Lisa and Last Supper, Da Vinci left thousands of pages of drawings. Some of these showed designs for machines that had never existed before, including a helicopter and an oxygen tank for use by underwater divers.
In one of his notebooks, Da Vinci drew a sketch of a parachute. Next to it, he wrote that anyone using the parachute would be able to jump from any great height, without injury. This parachute was never tested during his lifetime. In fact, it took more than 500 years for someone to turn his design into reality.
In June 2000, a British man named Adrian Nicolas successfully jumped from a hot-air balloon using a parachute based on Leonardo's design. To make the parachute, Nicholas asked for help from a history professor at Oxford University named Martin Kemp. Kemp did not use any modern tools to create the parachute, just ones that Da Vinci mentioned in his notebook.
The resulting parachute consisted of a canvas sheet attached to a 6.7-square meter wooden frame. It weighed 90 kilograms, 40 times more than a modern parachute! It was then attached to a hot-air balloon and lifted 3.5 kilometers above the South African countryside. At the right time, the parachute was cut from the balloon and Nicholas floated away from it toward the ground.
"Da Vinci was absolutely right," said Nicholas afterward, "I hope we made him smile.
The underlined word "attached" means _________.
connected
enrolled
noted
disliked