27、大学生在网络生活中加强社会公德自律的基本要求是( )
A、健康进行网络交往
B、正确使用网络工具
C、养成网络自律精神
D、自觉避免沉迷网络
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28、下列哪些是个人品德具有的鲜明特点( )
A、共同性
B、实践性
C、综合型
D、稳定性
29、志愿服务的精神是( )
A、奉献
B、友爱
C、互助
D、进步
30、职业生活中的道德和法律有许多共同的特点,包括( )
A、鲜明的职业性
B、严厉的惩罚性
C、明确的规范性
D、调解的有限性
Rock and roll is a genre of popular music that evolved in the United States in the late 1940s and early 1950s. It’s __1__ lie mainly in blues, rhythm and blues, country, folk, gospel, and jazz. The style subsequently spread to the rest of the world and developed further, leading ultimately to __2__ rock music.The term “rock and roll”now covers at least two different meanings, both in common usage. The American Heritage Dictionary and the Merriam Webster Dictionary both __3__ rock and roll as synonymous with rock music.__4__, Allwords.com defines the term as referring specifically to the music of the 1950s.Classic rock and roll is __5__ played with one or two electric guitars, a string bass or an electric bass guitar, and a drum kit. In the __6__ rock and roll styles of the late 1940s, either the piano or saxophone was often the lead instrument, but these were generally __7__ or supplemented by the guitar in the middle to late 1950s.The massive popularity and eventual world view of rock and roll gave it a __8__ social impact. Far beyond simply a musical style, rock and roll, as seen in movies and in the new medium of television, __9__ lifestyles, fashion, attitude, and language. It went on to spawn various sub-genres, often without the initially __10__ backbeat, that are now more commonly called simply “rock music”or “rock”.A.define B. characteristic C. unique D. rootsE. usually F.Basically G. earliestH.influencedI.followedJ.modernK.explanation L.Conversely M.replaced N.prepare O.seldom