LEIA O TEXTO
In 1963 concern began to be expressed about the nitrate and nitrite widely used to give a pink color to sweet-cure bacon, to prevent certain semi-hard cheeses from turning sour, and to block the growth of lethal micro-organisms in canned meat. Alone, these chemicals are dangerous only in vast overdoses, but if they are combined - in food itself, or in the human stomach - with secondary amines such as are known to exist in fish products, cereals, tea, and tobacco smoke, they produce nitrosamines which have been shown to cause tumors in laboratory animals. Limiting recommendations have been made, but no ban imposed.
Utilizando unicamente as informações contidas no texto anterior, assinale com um X a única opção correta de cada item.
a) In 1963
the use of nitrate and nitrite in foods increased.
sweet-cure bacon began to be colored pink.
the effects of some dangerous chemical were tested.
public anxiety was show over certain food additives.
b) Some forms of nitrite and nitrate were used
to sweet-cure bacon.
to prolong the life of semi-hard cheeses.
to slow down the growth of micro-organisms.
to can meat.
c) According to the passage certain chemical which are added to food are probably safe
when taken in moderation, with other chemicals.
when taken alone in moderation.
when taken together with secondary amines.
when taken in significant quantities.
d) Nitrosamines
are produced by combining with certain chemical.
can be produced in the human stomach.
exist in such things as fish products.
produce tumors in smokers.
e) It might be inferred that a ban on nitrates and nitrites should be imposed because
limiting recommendation do not work.
they are arrays injurious to health.
they are always harmful to laboratory animals.
they could have side-effects on humans.
f) The most appropriate rifle for the passage is:
Healthy eating in today’s world.
Food additives pose threat to health.
Dangerous chemicals should be banned.
Why nitrosamines should be banned.