We typically associate the word “science” with a person in a white coat doing experiments in a laboratory. Ideally, experiments should play as big a role in the human sciences as they do in the natural sciences; but in practice this is not usually the case. The are at least three reasons for this.
1．Human scientists are often trying to make sense of complex real world situations in which it is simply impossible to run controlled experiment.
2．The artificiality of some of the experiments that can be conducted may make the behavior of the participants abnormal.
3．There are moral reasons for not conducting experiments that have a negative effect on the people who participate in them.
Faced with the above difficulties, what are human scientists to do? One solution is to wait for nature to provide the appropriate experimental conditions. We can, for example, learn something about how a normal brain functions by looking at people who have suffered brain damage; and we can gain some understanding into the roles played by genes and the environment by studying twins, who have been separated at birth and brought up in different families. In the case of economics, economic history can provide us with a bank of-admittedly not very well-controlled-experimental data.
However, human scientists do not just sit around waiting for natural experiments to arise. They also think of some experiments of their own. Suppose you want to know how a baby sees the world. We cannot, of course, ask the baby since it has not yet learnt to speak. So it might seem that all we can do is guess. People usually won’t change their mind until it was found out that babies tend to stare at surprising things longer than at unsurprising ones. This key understanding was like opening a window on to the developing mind. There was now a way of testing babies’ expectations and getting some idea of how they are six months old, babies can already do the following things: figuring out that objects consist of parts that move together being aware of the difference between living and non-living things and even doing simple arithmetic work.
56．What is true about the natural sciences and the human sciences according to this passage?
A．Both human scientists and natural scientists can run controlled experiments.
B．Experiments done by human scientists and natural scientists are artificial.
C．Both human and natural science experiments should be of the same importance.
D．It’s not moral to conduct human science experiments.
57．What do we know about human scientists from this passage?
A．They are white coat scientists.
B．They have more experimental sources than natural scientists.
C．They conduct experiments passively.
D．They face more difficulties in carrying out their research.
58．Which of the following experiments belongs to human science experiment?
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for a fun and easy science experiment. Try creating a
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B． Taste Without Smell Put your senses to the test
with this simple experiment that shows the
importance of your sense of smell.
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your lung volume by completing this experiment.
D． Make a Rainbow Use sunlight and water to
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that will teach kids how rainbows work while they
enjoy a fun activity
59．What does the author tell us in this passage?
A．ABCs about the science experiment.
B．Some knowledge of science.
C．Some differences between the human sciences and the natural sciences.
D．The similarity of the natural sciences and the human sciences.
Besides calling 911, here is what to do in some life-threatening emergencies when no one is
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Lost in the wilderness
First, you’ve got to acknowledge you’re in trouble. Stay where
you can be seen clearly and remember to rest. Keeping a sense
of humor helps too—it reduces stress and helps creative thinking.
In a wide open area, make a colorful cross out of rocks to show
your present position.
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Aim to hit the top of the chair against your stomach, in the soft part
below the bony upside-down V of the ribs（肋骨）. Make a sudden
push against the chair. If you still can’t breathe after six tries, call 911,
even if you can’t talk. Write the word choking somewhere nearby, and
leave the line open until help arrives.
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Use your hand or clean cotton, or paper towels, or a scarf,
or any cloth you can find, and push down on the wound
until the bleeding stops. But if you put a band around
your leg tightly, you’re going to close the vessels（血管）
to the entire leg. In this way, you could lose your foot.
Bear attack
If you surprise a bear, don’t run away. That invites an attack.
Instead, stand up and back away slowly, without looking the
bear in the eyes. If it does charge at you, stick out your chest,
raise your arms, and spread your legs. Shout at the bear, to
frighten it. If it’s going to attack, lie facedown, with your hands
held firmly behind your neck. Play dead until you’re sure the bear
is gone.
60. When you see a colorful cross made of rocks in the wilderness, you know .
A. someone is bleeding B. someone is choking
C. someone is attacked by a bear D. someone is lost
61. If you are still choking after six tries, you should .
A. call 911 and leave the line open B. keep a sense of humor
C. use your hand our clean cotton D. lie down with your hands behind your neck
62. Don’t tie around your bleeding leg tightly, or you could .
A. stop bleeding B. reduce stress
C. cause breathlessness D. lose our foot
63. The passage is mainly teaching us how to .
A. avoid a bear attack B. survive the emergencies
C. deal with a choke D. find our way