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According to their functions different organs of the human body are divided into several systems: the bones, the muscular system, the alimentary tract, the respiratory system, the urogenital1 system, the vascular system, and the nervous system.
The muscles and the bones are under the layer of subcutaneous2 fat. The muscles are connected with the bones.
The heart and the large blood vessels connected with it, as well as the lungs and the esophagus are in the thoracic cavity. The spleen, the liver and the stomach are in the abdominal cavity under the diaphragm. The small and large intestines are in the abdominal cavity lower than the stomach, the liver and the spleen. The kidneys are on the posterior side of the abdominal cavity
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1    since 1908 it is considered to be an olympic sport.  с 1908 года оно считается олимпийским видом спорта2  today, there are several kinds of figure-skating, including freestyle, synchronized team skating, pairs. на сегодняшний день существует несколько видов фигурного катания, в том числе и фристайл, и групповое синхронное катание, и парное катание3.    i’m sure many people in the world would agree that figure-skating is the most interesting sport to watch. я уверена, что многие люди в мире согласятся с тем, что фигурное катание является наиболее интересным видом спорта.4      athletes perform challenging jumps, spins, and other intricate moves. портсмены выполняют нелегкие прыжки, вращения и другие замысловатые трюки.5    this sport requires hours of training each day, as well as lots of effort этот вид спорта требует многочасовых тренировок каждый день, а также усилий