1. The author E. L. Doctorow is best known for mixing

During the last
two decades, there has been plenty of
scienti
fi
c e
ff
ort made to .............
A)
convince the public of the dangers of vitamin C 
B)
con
fi
rm that the common cold can be prevented
by vitamin C 
C)
establish a connection between coughing and
bronchitis 
D)
study the adverse e
ff
ects of vitamin C 
E)
demonstrate how the body reacts to low levels of
vitamin C 
7. Since early times, it has been assumed that the
actions of animals are unconscious. Behaviour, in this
view, stems almost exclusively from instinct. If
animals behave in ways that seem pretty clever, they
do so without thinking about it. Animals may know
things, the argument goes, but that they know that
they know. Current research reports suggest a
startling depth of intelligence among animals.
Although no one can yet 'prove' the existence of
animal consciousness, the data o
ff
ered make a
compelling case for at least considering it.