如图是心脏结构示意图，请识图答问：填出图中字母所指结构的名称：
A．______ B．______
C．______ D．______
①．______ ②．______
③．______ ④．______
⑤．______ ⑥．______．
心脏有四个腔，分别为：左心房、左心室、右心房、右心室．与心室相连的血管是动脉血管，与心房相连的是静脉血管．心房与心室之间有防止血液倒流的房室瓣，心室与动脉之间有防止血液倒流的动脉瓣．所以如图所示的结构为：A右心房；B左心房；C右心室；D左心室；①上腔静脉；②主动脉；③肺动脉；④肺静脉；⑤动脉瓣；⑥房室瓣
故答案为：A右心房；B左心房；C右心室；D左心室；①上腔静脉；②主动脉；③肺动脉；④肺静脉；⑤动脉瓣；⑥房室瓣
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| One of the most well-known directors of our time is Stephen Spielberg. He was born in Cincinnati on 18 December 1946. His father was an electric engineer and his mother was a performing pianist. His sister, Anne Spielberg, became a screenwriter who wrote the stories for many famous films. Stephen had always wanted to be a director ever since he was a young boy. When he was just 13 years old, he made a 40-minute film. It won a local competition. Three years later, he produced a film called Firelight, which made one hundred dollars' profit at the cinema in his hometown. Many of the ideas from this film were later used for one of his most famous films called Close Encounters of the Third Kind. When he was 18 years old, he wanted to go to film school so that he could improve his skills and become an even better director. Unluckily, he was unsuccessful in getting a place at this school so he went to a university in California to study English. Even though he had failed to get into the school he wanted to go to, he didn't let this stop him following his dream to become a great director. Stephen Spielberg has directed many films since his first major film in 1976. He now owns many different businesses, most of which are involved in the film industry. | ||||||||||||
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