贝多芬的第九交响曲是

【名词&注释】

多普勒(doppler)、左心室(left ventricular)、封建社会(feudal society)、社会形态(social formation)、贝多芬(beethoven)、共产主义社会(communist society)、奴隶社会(slave society)、字母表(alphabet)、交响曲(symphony)、原始社会(primitive society)

[单选题]贝多芬的第九交响曲^(symphony)是

A. 《英雄》
B. 《命运》
C. 《田园》
D. 《合唱》

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学习资料：

[单选题]

A. surviveB． nurse
B. purpose
C. turn

[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.

A. In Africa, people learned to send messages by beating on a series of large drums (鼓). Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.
B. In the eighteenth century, a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet (字母表^(alphabet)). It was like spelling out words with flags and arms.
C. Over a long period of time, people sent messages by all these different ways. However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.
D. 51. According to this passage, the Roman way of communication depended very much on______.
E. fine weather
F. high tower
G. the spelling system
H. arm movements

[单选题]单纯二尖瓣狭窄的超声心动图特点不包括 （ ）

A. 左心房大
B. 左心室大
C. 二尖瓣后瓣膜与前瓣膜同向运动
D. 连续多普勒显示二尖瓣瓣口血流速度明显增快
E. 二尖瓣增厚，回声增强，瓣膜活动受限

[单选题]关于社会形态演化的次序，正确的选项是( )

A. 奴隶社会^{(slave society)}、原始社会^{(primitive society)}、资本主义社会、社会主义及共产主义社会
B. 奴隶社会^{(slave society)}、封建社会、资本主义社会、社会主义及共产主义社会
C. 原始社会^{(primitive society)}、奴隶社会^{(slave society)}、封建社会、资本主义社会、社会主义及共产主义社会
D. 原始社会^{(primitive society)}、奴隶社会^{(slave society)}、资本主义社会、封建社会、社会主义及共产主义社会

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