全国艺术院校“桃李杯”舞蹈比赛创立的背景
参考答案：
全国艺术院校"桃李杯"舞蹈比赛创立的背景是：建全舞蹈教育体制，促进舞蹈教学，培养优秀舞蹈表演人才。
以下可引起右心房增大的病变是
A．动脉导管未闭
B．三尖瓣关闭不全
C．二尖瓣关闭不全
D．夹层动脉瘤
E．缩窄性心包炎
—How about your trip to Hainan — It couldn't have been ______. Sometimes I went swimming in the sea; sometimes I lay on the sand.
A. so well B. as badC. better D. worse
