The First time someone thought of an idea similar to a parachute （降落傘） was in 1514.It was Leonardo da Vinci（1）

who/that

who/that

sketched its design in his notebook.Many years later，another man by the name of Fausto Veranzio published his own design，which was strikingly similar to（2）

that

that

of Da Vinci.Veranzio went on （3）

to explain

to explain

（explain） exactly how this device would work when jumping from a high place.However，the first man to successfully try the parachute（4）

was said

was said

（say） to be a Frenchman named J.P.Blanchard.He dropped a little dog sitting in a basket all by （5）

itself

itself

（it） from a hot air balloon in flight and watched it land on the ground （6）

safely

safely

（save）.He even claimed that he used the parachute himself in 1793. （7）

What

What

was unlucky was that he broke his leg when he touched the ground.
    The first man to use the parachute regularly was（8）

a

a

Frenchman named Andre-Jacques Garnerin.According to a recorded documentation，he went parachuting（9）

for

for

the first time in 1797，when he jumped off a（10）

height

height

（high） of 600 meters but landed securely.