问题
单项选择题
冠脉血流量增多主要由于（）
A.主动脉收缩压增高，心舒期缩短
B.主动脉收缩压下降，心舒期缩短
C.主动脉舒张压增高，心舒期延长
D.主动脉舒张压下降，心舒期缩短
E.主动脉收缩压增高，心舒期不变
答案
参考答案：C
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冠脉血流量增多主要由于（）
A.主动脉收缩压增高，心舒期缩短
B.主动脉收缩压下降，心舒期缩短
C.主动脉舒张压增高，心舒期延长
D.主动脉舒张压下降，心舒期缩短
E.主动脉收缩压增高，心舒期不变
参考答案：C
Mr Smith from London. Now he is in China. He is .He teaches English a middle school. He works very hard. His students like very much. He can a little Chinese . His students often teach him Chinese Sundays. Mr Smith likes playing football . He often plays football his students. Mr Smith a son. His name is Jack. He is student. He studies in a middle school. He goes to school bike everyday. He gets back home at four in the afternoon. He likes TV in the evening.
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