A. The majority of them are quiet. B. Their age hasn't been determined.

C. All but one of them are extinct. D. Citizens aren't affected by them.

　　It's OK to say you've never heard of grime (伦敦地下音乐) - unless you're from the UK. That's because this music type was invented in the UK in the early 2000s.

　　To someone who's not familiar with underground music culture, it's easy to get confused between hip-hop and grime since they are both noisy. And many people didn't bother to tell them apart，until earlier this month when grime stars like Stormzy and J Hus led this year's Mobo - "music of black origin", an award in the UK. Just like UK electronic music and hip-hop, from which grime drew influence, it mostly reflects the thoughts of young people. But different from hip-hop, grime singers sing in dialects with strong accents, giving a special flavor to their songs.

　　Lady Leshurr，known as the "Grime Queen", said that she once tried to hide her accent, as she didn't want people to judge her. But one day, she realized that she didn't need to change herself just to please others. And there's no doubt that this is the soul of grime music: be yourself.

　　Grime has challenged modem music in its production beauty and its expressions. Also different from the hip-hop culture, which usually focuses on being rich, grime singers pay more attention to social phenomena like those who suffer from disasters and the gap between the rich and poor.

　　Although still quite a young music type, grime seems to be getting loved by more and more people. In 2016, the English grime artist Skepta won the Mercury Prize with his album Konnichiwa, beating big names like David Bowie and Radiohead.

　　However, no matter whether grime is one day accepted widely or not, one thing is for sure: in grime, singers always stay true to themselves.

　　24. Why is it easy to get confused between hip-hop and grime for some people?

　　A. They are the same in music form. B. They both make a lot of noise.

C. They have a great effect on each other. D. They both developed out of