Pop music is the name for different forms of popular, commercial(商业) music. It had its beginning in the USA and spread throughout the whole world during the 1950s and 1960s. It is widely liked by the young people. The best known early form of pop music was “rock’ n’ roll”; another was “blues”. A more recent development is “folk-rock”. Pop music has taken the place of native music in many parts of the world; it has caused the number of people for jazz to become much smaller than it was in the 1950s and earlier, and it has now begun to rule musical stage productions. It’s a big industry. Much pop music is without artistic value, but the work of some pop singers, e.g. the Beatles, Bob Dylan, the groups like Floyd and Crosby, Stills and Nash, is on a higher musical level. And there is still a great interest in it today. Pop music concerts and festivals are held all over the world.
小题1:All of the following forms belong to pop music EXCEPT __________________.
A．blues
B．rock’ n ’roll
C．jazz
D．folk-rock小题2:According to the article, the number of people for jazz in the 1950s and earlier was ___________ it is today.
A．much greater than
B．much smaller than
C．as great as
D．as small as小题3:Which of the following is TRUE?
A．No pop music is on a high musical level.
B．Much pop music is very artistic.
C．Pop music is highly artistic.
D．Not all pop music is without artistic value.小题4:“It is a big industry” means that _______________.
A．it makes a lot of music
al instruments (乐器)
B．it is a big musical and commercial business
C．the pop singers are very hard-working
D．pop music is on a very high musical level
代入数据计算得：绿光与紫光的频率之比是3∶4，所以选项C是正确的,其余的ABD三个选项是错误的.