60.
We
can infer from the passage____.
A. A
new information revolution will be coming.
B.
People won’t share copyrighted material on the net
C.
People can share the free encyclopedia
D. The
future of the Internet will rely on the government
B
Happiness is genetic
HAPPINESS
and sadness are states of being that define the way we view the world. It is
often said that some people by nature have a sunny disposition(性格). Now
scientists may have discovered why.
Some
people may be hard-wired(天生的)for
happiness, while others are genetically negative, scientists have suggested in
a study published late February, in British journal Proceedings of the Royal Society B(《皇家学会学报B》).
Earlier
research had already established that the gene known as 5-HTTLPR plays a key
role in determining how the neurotransmitter(神经传递素)serotonin(含于血液中的复合胺)works
within the brain. Serotonin, a hormone(荷尔蒙),
passes chemical messages between nerve cells. It has been closely linked to
mood. Several anti-depressant(抗抑郁)drugs
regulate serotonin levels.
Scientists
had also identified three variants(变体)of
the gene. Two so-called "short" variants were linked to a higher risk
of depression and suicide(自杀)attempts.
Unlike the two "short" variants, the "long" variant of
5-HTTLPR showed a clear dislike of negative images(图像),
such as fierce animals, and a clear liking for positive ones, such as flowers.
Researchers
from the University of Essex in Britain, led by Elaine Fox, showed
participants a series of images.
The
images were divided into three kinds: negative ones aimed at inspiring fear or
stress such as a spider or person about to commit suicide, pleasant ones and
neutral(中性的)ones.
The
participants who had the long variant of the 5-HTTLPR gene "showed a clear
dislike of negative material alongside a careful attention for positive
material," the researchers found. They paid close attention to the pretty
pictures, and ignored the frightening ones. On the other hand, the short
variant groups had the opposite reaction.
In
January, the Australian government organized "happiness workshops",
teaching government staff how to be happy. The department that held the
"happiness workshops" said unhappy staff weren’t productive staff.
Australian
political opposition parties have argued that the "happiness
workshops" are probably a waste of money and couldn’t increase
productivity as intended. However, whether the workshop will have a happy or
disappointing result, we will have to wait and see.