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If you want to boost your child’s results at school, you could do a lot worse than ensuring that they do plenty of exercise. Scientists have already shown that physical activity can make you brainier. But a team in America has used scans to show that an important part of the brain actually grows in children who are fit. These youngsters tend to be more intelligent and have better memories than those who are inactive.
Scientists also found that one of the most important parts of their brains was 12 percent larger than those of unfit youngsters. They believe that encouraging children to take exercise from a very young age could help them do better at school later. Researchers from the University of Illinois, in the U.S., studied the brains of 49 children aged nine and ten using a magnetic resonance imaging scan, a technique which provides very detailed pictures of organs and tissues in the body.
实验证明，聪明孩子的大脑中重要部分的体积要比身材过胖、或者不健康的孩子大12%。研究者相信，从小就鼓励孩子们运动可以帮助他们在学校生活中发展得更好。美国一所大学运用“磁共振”来进行实验，实验对象为49 名9—10 岁的儿童，这种技术可以精确的显示出人体器官以及各个组织的具体情况。
They also tested the fitness levels of the children by making them run on a treadmill. The scientists found that the hippocampus, a part of the brain responsible for memory and learning, was around 12 percent larger in the fitter youngsters.
Professor who led the study said the findings had important implications for encouraging individuals to take part in sport from a young age. “We knew that experience and environmental factors and socioeconomic status all impact brain development,” he said. “If you get some lousy genes from your parents, you can’t really fix that, and it’s not easy to do something about your economic status. But here ’s something that we can do something about.”
The Educational Testing Service has announced that it is temporarily suspending registration for its tests in Iran, including the popular TOFEL test. The statement posted on the E.T.S. Website on Wednesday cited the United Nations Security Council resolution “ affecting banks and financial institutions that conduct business in Iran.”As a result of this resolution, “E.T.S. is currently unable to process payments from Iran.”
Experts and Iranian expatriates were appalled, saying that if the sanctions prohibited Iranians from studying abroad, they would hurt precisely the kind of outward-looking young Iranians the West would like to help.
The United Nations Security Council approved a fourth round of sanctions against Iran in June. Theresolution mainly affects military purchases and financial transactions of the Islamic Revolutionary Guards Corps. President Obama signed into law additional unilateral sanctions, including restrictions on foreign banks that do business with the Revolutionary Guards or other blacklisted Iranian institutions.
Karim Sadjadpour, an Iran expert at the Carnegie Endowment for International Peace, said: “Prohibiting TOEFL from operating in Iran is counterproductive to the spirit of smart sanctions. The government is not being hurt by TOEFL not operating in Iran, it’s the people, and precisely the people we’re hoping to empower. ”
A State Department spokesman, Philip J. Crowley, said the government was “ exploring whether there are alternative mechanisms” to allow E.T.S. to continue its work in Iran. “Our intent remains to apply pressure on the Iranian government without placing an undue burden on the Iranian people, ” he said.