正确答案: D
《合唱》
题目:贝多芬的第九交响曲是
解析:D
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学习资料的答案和解析:
[单选题]
surviveB. nurse
[单选题]Passage FiveRoman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.
high tower
解析:51.答案为B 从第一段可知罗马士兵通过在高塔上叫喊传递消息,因此答案为B。
[单选题]单纯二尖瓣狭窄的超声心动图特点不包括 ( )
左心室大
[单选题]关于社会形态演化的次序,正确的选项是( )
原始社会、奴隶社会、封建社会、资本主义社会、社会主义及共产主义社会
解析:C【解析】人类历史上,社会形态演化的次序依次是:原始社会、奴隶社会、封建社会、资本主义社会、社会主义社会及共产主义社会,前五种已经形成。“C”是正确的。