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Which of your hands do you use most? Very few of us use both of our hands well. Most of us are right-
handed. Only about five people out of a hundred are left-handed. New-born babies can take things with either
of their hands, but in about two years they like to use their right hands. Scientists don't know why this happens.
They have studied it. They think our animal ancestors (祖先) are right-handed. This may not true. Monkeys-
are our closest relations in the animal world. Scientists have found that monkeys like to use one of their hands
more than the other-but it can be either hand. There are as many fight-handed ones. Next time you visit the zoo,
watch the monkeys carefully. You'll see that some of them will swing (摆动)from their right hands and others
will use their left hands. But most human beings (人类) use their right hands better and this makes life difficult
for the left-handed ones. We live in a right-handed world.
1. Very few of us can use both of our hands well. It mean _____.
A. we can't use one as well as the other
B. we can't use both hands
C. many people can use one as well as the other
D. some of us can use both hands
2. New-born babies _____ at first.
A. can only use their fight hands
B. can only use their left hands
C. can't use their hands
D. can use both their hands
3. Which of the following is true?
A. Monkeys are left-handed.
B. Monkeys are right-handed.
C. Some of the monkeys are left-handed monkeys.
D. There are much more right-handed monkeys than left-handed monkeys.
4. The left-handed people are difficult in life because _____.
A. they can't use their right hands at all
B. most people use their right hands better
C. they can't use both of their hands
D. they can't use their left hands

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