"Ihavesuperpowers,"agirlnamedMeganwhisperstoherdoctorin...

问题详情：

"I have super powers," a girl named Megan whispers to her doctor in a recent TV show. That's her explanation for how she's able to stand painful cuts and being hit with a base-ball bat--all without feeling any pain.

Across the world about a few hundred people suffer from one of many disorders （紊乱） that make them completely unable to feel pain from the time they are born.

Now a new form of this disorder has been recognized among people from northern Pakistan, and scientists have tracked down the changed gene responsible for the condition. Their study could help researchers gain a better understanding of how pain works and may help them develop new medicine that may reduce pain with fewer side effects.

Researchers discovered the latest version of the disorder when they found a young street performer in Pakistan, sticking knives through his arms. Then they found six other people from three families in the same area who also had the disease.

These people were able to feel hot and cold, sense pressure, and could tell sharp objects touching their skin from blunt ones. They were all believed to be of only average intelligence. But none of them felt any pain. Surprisingly, the families were unrelated, but all of the sufferers had changes to the same gene. The changed gene causes a protein （蛋白质） to form part of a channel that is undoubtedly important for human sense of pain.

Early childhood can be awful for people without feeling any pain. They can bite endlessly on their tongues and fingers during teething, stick their fingers in their eyes, or suffer major injuries without noticing. The six people studied for the Nature paper all had injuries to their lips or tongues from biting themselves when they were young.

1．The study of feeling no pain might lead to __________.

A．our feeling pity for the patients      B．our helping the patients to recover

C．our removing pains in a better way  D．our curing illnesses more effectively

2．If one is born painless, his parents probably ____________.

A．have a normal sense of pain                 B．have a weak sense of pain

C．keep a strong sense of pain                 D．lack a natural sense of pain

3．It can be inferred from the passage that it's         for children who feel no pain.

A．lucky          B．natural           C．bitter                D．dangerous

4．The proper title for the passage is "Feeling No Pain: _______ ."

A．Cause of the Gene Disorder Still Unknown

B．New Disorder Found Throughout the World

C．Way of Dealing with It Studied in Pakistan

       D．New Form of Rare Gene Disorder Discovered

【回答】

CADD

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