Most of us might think a life without pain would be sweet.Not so for three-year-old Gabby

Most of us might think a life without pain would be sweet.

Not so for three-year-old Gabby Gingras, who has a rare disorder which means she can not tell when she is hurting herself.

As a baby, she did not cry when given a blood test.

While her teeth were growing, she bit her fingers until they bled and she hurt her tongue.

When a tooth was knocked out, she did not cry—all because she cannot feel physical pain.

Now, she was partly blinded by her habit of putting one finger in her eyes. Her eyes improved only after Mr. Gingras made her wear swimming goggles 24 hours a day. Doctors were confused by her condition so her parents set about finding out for themselves.

Mother Trish gave up her job and finally found the answer on the Net. Gabby had a disorder that could not be cured.

The family visited another sufferer—one of only 25 in the US—but admitted:" It's discouraging".

They discovered the 24-year-old girl of South Dakota was in a wheelchair after losing both legs to infections. As a girl, she was unaware when she was hurting her legs.

The three-year-old girl is suffering from a rare illness that ______.

A．she has never cried since she was a baby

B．she is made half blind by the strange illness

C．she often chews her own tongue

D．she is unable to feel pain physically