ข้อสอบเข้ามหาวิทยาลัย
วิชาภาษาอังกฤษ
กขค ปี 2539
Part 4 : Questions
Direction : Read the following passages and choose the best answer for each question.
Passage 1
Before eating food sold by vendors on the
street , you should be aware that nearly all
of this food and water is
contaminated by toxic residues. If you choose
to eat at home , you still have a 35
percent chance of eating rice which
has been contaminated by lead.
If egg dishes are your fancy , there is
also a high probability that they have
been contaminated by various
chemicals , regardless of whether they are eaten
at home or on the street.
It seems that nothing is safe , for even
fruits , instant foods , and beans may have been
exposed to toxins at
some point in the production process.
In the 1994 - 1995 survey by the Food Analysis
Division of the Department of Medical Sciences , it
was revealed
that contaminated food is still very
much a problem in the capital.
According to Supatra Im - urb of the Food
Analysis Division , there are two ways food can
become contaminated
: by chemicals or heavy metals , or by microbes.
Lead is the main type of heavy metal
contamination. The survey indicated that nearly
one hundred percent of
food samples taken from street vendors
contain concentrations of lead. Drinking water is
easily contaminated in this way.
The source of this pollution is , of course
, traffic congestion. Every day automobiles release
high levels of lead
into the air we breathe , which is why
most food and drink sold by street vendors
was shown to contain traces of the
substance.
According to the Division of Food Analysis ,
lead contamination has been found in food
and drink at a number
of school canteens , which is particularly alarming
when one considers that children are the
ones being affected.
Lead contaminated is by no means the only
danger. Food products , at every step of the
production process ,
are exposed to several different forms of
contamination.
It seems almost impossible food consumers to
avoid contaminated food , as it affects vegetables , fruits , meats
and many other types of foods.
The survey showed that fruits and vegetables
sold in markets contain pesticide residues such
as phosphate ,
pyrethroid , and arsenic. Chemical substances such
as pesticides and fertilizers are commonly used
by farmers , who
seek to make their produce appealing in
order to maximize profits.
People who eat meat take the risk of
consuming drug residues. In many types of
animal farming , hormones are
used to accelerate growth , so that 40
the livestock can be sold at market as
quickly as possible.
But if the animals are killed before the
drug is metabolized , people who eat the meat
and entrails , particularly
the liver , will in effect be taking the
same medicines. While these are not necessarily
fatal , they can cause health
problems.
Contaminants like the ones mentioned above are
absorbed by the body gradually , and increase
over time. As
the levels of toxicity rise , sufferers become
weaker and weaker , resulting in serious illness , even
death.
รวบรวมโดย
นงลักษณ์ เมธาวรากร
จำนวนผู้เข้าใช้งาน
ตั้งแต่วันที่ 1 สิงหาคม พ.ศ. 2543
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