American scientists have started a series of
research on the relationship of intelligence development and birth weight of
babies. One study 1 that babies wbo are
bigger at birth 2 are more intelligent
later in life. It found that the intelligence of a child at seven years of age
is directly 3 to his or her weight at
birth. Study organizers say this is probably because heavier babies received
more 4 during important periods of
brain development before they were born. The study 5 almost 3, 500 children. Researchers in
New York City used 6 tests to measure
intelligence. Brothers and sisters were tested so that the 7 of birth weight alone could be separated from
the effects of diet or other 8 . The
researchers found "that children with higher birth weights generally did better
on the intelligence tests. Also, 9 Another American study examined the development of very
low birth weight babies. They were born early,
before the end of the normal nine-month
development period. 10 They found that
the young people who had been very low birth weight babies were less likely to
complete high school. 11
【参考答案】
They also did not perform as well on intelligence tests as o......