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Which of your hands do you often use? Very few of us use both
of our hands 1. Most of us use 2hands.
Only about five people out of a hundred use left hands. New-born babies can
take things with 3of their
hands, but in about two years, most of them use their right hands. Scientists
don't know 4this
happens. They have studied it. They think our animal ancestor (祖先) used their right hands, but this may not be true . Monkeys are our5relations in the animal world. Scientists
have found that monkeys like6one of their hands more than the other,
but it can be either hand. There are as many right-handed monkeys as the
left-handed ones. Next time you visit the zoo and7monkeys
carefully. You will see that some of them will swing (摆动) their right hands and others will use their left hands. But men
use their right hands 8 and
this make life 9for the left-handed ones. We live in a
right-handed world.
Some scientists have found out that more of successful people
are left-handed, but they can't know why. But they are sure that its secret
will be10one day.
