题干

中科院的全超导的“人造太阳”﹣托克马克核聚变试验装置的调试运行成功,使我国在该领域的研究处于世界前列.氘和氚是核聚变的原料(氘、氚原子核内都只有1个质子,但含不同数目的中子),聚变发生后,氘、氚原子核转变为氦原子核(氦原子核内有2个质子).根据以上叙述,下列说法正确的是(  )


A:核聚变中原子不变,没有变成新的原子

B:氘原子和氚原子属于不同元素

C:氘原子和氚原子属于同种元素的两种不同原子

D:氘原子和氚原子的相对原子质量相同

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C

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    Academic learning is usually in the spotlight at school, but teaching elementary-age students “soft” skills like self-control and how to get along with others might help to keep at-risk kids out of criminal trouble in the future.

    Once a program called Fast Track was started in the early 1990s for more than 7,600 children of 55 schools in America. They were identified by their teachers and parents to be at high risk for developing aggressive behavioral problems. The students were randomly divided into two groups; half took part in the intervention, which included a teacher-led curriculum, parent training groups, academic tutoring and lessons in self-control and social skills. The program, which lasted from first grade through 10th grade, reduced delinquency(少年犯罪), arrests and use of health and mental health services as the students aged through adolescence and young adulthood.

    In another latest study, by looking at the data from nearly 900 students in previous findings, researchers found that about a third of the influence on future crime outcomes was due to the social and self-regulation skills the students learned from ages 6 to 11.

    The academic skills, or hard skills like learning of physics, which were taught as part of Fast Track, turned out to have less of an influence on crime and delinquency rates than did the soft skills, which are associated with emotional(情绪的) intelligence. Soft skills might include teaching kids to work cooperatively in a group or teaching them how to think about the long-term consequences when they make a decision.

    Researchers drew the conclusion that these soft skills should be emphasized even more in our education system and in our system of socializing children. Parents should do all they can to promote these skills with their children as should education policymakers. To the extent we can improve those skills, we can improve outcomes in delinquency.