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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.
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
B. can only use their left hands
C. can't use their hands
D. can use both their hands
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.
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
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 be 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 right-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.
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
B. can only use their left hands
C. can't use their hands
D. can use both their hands
B. Monkeys are right-handed.
C. Some of the monkeys are left-handed, and others are right-handed.
D. There are much more right-handed monkeys than left-handed monkeys.
B. right-handed world
C. monkey world
D. animal world
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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world. It is my own opinion that zoos, although not perfect, do have a useful function. Firstly, zoos are
places of education. Zoos can help children to appreciate nature. Furthermore, research into animal behavior
is done in zoos and has increased our knowledge of zoology, genetics and even psychology. Above all, zoos
can protect the future of many species of animal. Many species today are in danger of extinction (灭绝), and
thanks to zoos, they have a chance of survival. Opponents of zoos say that they are cruel. First of all, they
argue zoos cannot recreate the environment in which animals live and because of this, animals are bored and
depressed. Secondly, animals have frequent contact with human visitors, which can be stressful. However,
in my opinion, most zoos have improved recently. It is now quite rare to see animals in cages, and most zoos
try hard to recreate the environments in which different animals live. In conclusion, although zoos are not a
perfect environment for animals, I believe that they have more advantages than disadvantages. In an ideal
world, zoos would not be necessary. But as long as man hunts animals for profit and destroys their
environments, zoos are essential.
B. Saving rare animals.
C. Recreating an environment.
D. Making a profit.
B. Animals must live their lives in cages.
C. Animals can feel bored and sad.
D. Animals are in danger of extinction.
B. They have more disadvantages than advantages.
C. They are a perfect environment for animals.
D. They are recreative places for animals.
B. children help them
C. they can see other animals in the zoos
D. the animals are cruel
B. getting smaller and smaller
C. getting better and better
D. more and more popular
B. creative
C. necessary
D. cruel