[填空题]
Autism (儿童自闭症) is a serious mental illness, especially of
children,
in which one becomes unable to communicate or form
relationships
with others. There has been alarming rise in autism rates in
the U. S. and 62. ______
some other
developed nations recently, which have come one of the most
63. ______
anguishing mystery of modern
medicine, and the source of much desperate speculation 64. ______
by
parents. In 1970, the incidence of autism was thought to be just 1
in
2,500; today about 1 in 170 kids born in the U, S. is down by autism.
65. ______
According to a recent study performed by Cornell University, autism can
be
caused by watching too much television at a tender year.
"Approximate 17% of 66. ______
the growth
in autism in California and Pennsylvania during the 1970s and 1980s
was due
to the growth of cable television". This is further supported by the
