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IS IT TIME TO GET - MP3 Your computer has been playing music for years, one CD at a time.Now hundreds of songs can be stored in your PC if they’re in the MP3 format. What is it? MP3 compresses (压缩) music into small computer—friendly files.You access MP3 music several ways: Tunes can be downloaded from websites that have converted (转变) vast music libraries into MP3.Or you can prerecorded CDs into your PC and convert songs in minutes into MP3.Once MP3 music is on your PC’s hard drive, you can play it through your computer’s speakers, “ burn ” it onto blank CDs or swap (交换) MP3 files with friends using e—mail. How much? Software needed to play and convert MP3 music is often free.It is preinstalled (预先安装)on most new computers or can be downloaded from many websites, including MP3, com.Some MP3 sites are free.Just type at around $50 and can hold hundreds of songs.A blank CD on which you can record music costs about a dollar. Advantages MP3 turns your home PC into a jukebox (自动唱机).Tiny MP3 players are the size of a deck of cards, making it easy to take hundreds of songs with you. Disadvantages You may find that music at many sites is limited.And some only allow you to listen rather than download offerings.Others let you download music that then can’t be copied to MP3 players.And a growing number of new CDs make it impossible to copy songs to a computer. 小题1:How can you get Mp3 music? A.By turning your home PC into jukebox. B.By taking you own music or songs with you. C.By copying songs to a PC through the speakers. D.By downloading from websites which have converted music libraries. 小题2:Which is NOT true according to the passage? A.Software needed to play and convert MP3 music is often free of charge. B.MP3 music can be “burned” onto bland CDs or swapped with friends by e-mail. C.MP3 music can be taken along while traveling. D.A greater number of new CDs make it possible to copy songs to a computer. 小题3:How much will you pay for a MP3 player? A.Free of charge B.Free downloading C.At least fifty dollars D.About a dollar 小题4:What is the closest meaning of the underlined word “burn”? A.Copy B.Play C.Store D.Change
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【简答题】十九届四中全会认为,当今世界正经历百年未有之大变局,我国正处于实现___________关键时期。
【单选题】当今世界正经历百年未有之大变局,我国正处于( )关键时期。顺应时代潮流,适应我国社会主要矛盾变化,统揽伟大斗争、伟大工程、伟大事业、伟大梦想,不断满足人民对美好生活新期待,战胜前进道路上的各种风险挑战,必须在坚持和完善中国特色社会主义制度、推进国家治理体系和治理能力现代化上下更大功夫。
A.
实现中华民族伟大复兴
B.
全面建成小康社会
C.
实现现代化强国
D.
实现“两个一百年”奋斗目标
【简答题】(B) People can be addicted to different things — e.g. alcohol, drug, certain foods, or even television. People who have such an addiction are compulsive: they have a very powerful psychological need t...
【多选题】655物质激励的常用形式有()。
A.
B.
奖金
C.
培训
D.
福利
E.
改善工作环境
【判断题】当今世界正经历百年未有之大变局,我国正处于实现中华民族伟大复兴关键时期。要顺应时代潮流,适应我国社会主要矛盾变化,统揽伟大斗争、伟大工程、伟大事业、伟大梦想,不断满足人民对美好生活新期待。
A.
正确
B.
错误
【单选题】People can be addicted to (沉溺于) different things — e. g. alcohol, drug, certain foods, or even television. People who have such an addiction are compulsive (强迫的): they have a very powerful psychologic...
A.
and takes great pleasure, from what he or she buys
B.
in order to satisfy his or her basic needs in life
C.
just to meet his or her strong psychological need
D.
and feels he or she is cheated
【单选题】下列关于杂合子和纯合子的叙述正确的是()
A.
杂合子的双亲至少一方是杂合子
B.
纯合子的细胞中无控制相对性状的遗传因子
C.
纯合子测交后代都是纯合子
D.
杂合子自交的后代全都是杂合子
【简答题】物质激励的常用形式有( )。
【单选题】关于纯合子与杂合子的叙述正确的是()
A.
纯合子自交,后代不发生性状分离
B.
杂合子杂交,后代不发生性状分离
C.
纯合子自交,后代发生性状分离
D.
杂合子自交,后代不发生性状分离
【单选题】下列关于杂合子和纯合子的叙述正确的是()
A.
杂合子的双亲至少一方是杂合子
B.
纯合子的细胞中无控制相对性状的遗传因子
C.
纯合子测交后代都是纯合子
D.
具有一对相对性状的杂合子自交,后代显性个体中杂合子的比例是1/2
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