81.   The high schools will be run by three nonprofit organizations that work with teen-agers with substance abuse and behavioral problems.

82.   The long-term effects of exposure to the drugs the mother was using only worsen any mental health and behavioral problems.

83.   The higher rate of behavioral problems for students entering school late did not show up in primary school but was very visible during adolescence.

84.   The institutes help children with developmental disorders, brain injuries and behavioral problems.

85.   The most convincing evidence that sleep may be partly responsible for behavioral problems comes from studies conducted in pediatric sleep labs such as the one Steven visited.

86.   The money will go to help children with developmental disorders, including those with brain injuries or serious behavioral problems.

87.   The older woman said Berry had never known his father and had some behavioral problems.

88.   The only children routinely placed in such facilities are those who might flee or who exhibit behavioral problems, INS officials said.

89.   The primary need for some of them is a hearing aid to prevent the speech problems and learning delays that can so often lead to behavioral problems.

90.   The researchers said they had not teased out whether these children were the same ones that were at increased risk of behavioral problems.

a. + problem >>共 705
serious 4.46%
economic 3.74%
major 3.48%
financial 2.66%
biggest 2.34%
technical 1.95%
only 1.92%
big 1.91%
potential 1.91%
real 1.87%
behavioral 0.35%
behavioral + n. >>共 175
problem 22.15%
change 8.35%
health 3.58%
disorder 2.56%
economist 2.21%
economics 2.21%
pattern 1.70%
research 1.70%
genetics 1.70%
study 1.53%
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