89.　 There is a wide v_______ of new music to be discovered in every corner of the world.

88.　 Hip-hop and rap have much in c______ with blues and rock.

87.　 Do you play any musical i________ t?

86.　 People has been playing the blues for many years, but the music has kept many of its____________.(特点)

85.　 Latin music----- music that uses traditional styles from Latin America----has s_______ all over the world.

84.　 Because they are so important, ecosystems try to be very careful with these ______(有价值的) resources.

83.　 If the new species is too strong or uses too much of the resources in the habitat, some of the _____(原始的) species may become endangered.

82.　 Professor Stevenson, who has _____ (奉献)himself to protecting the milu deer, gave a talk to Chinese college students in Beijing.

81.　 Many of the world’s animals and plants are in d______.

80.　 Even small things can make a big d________ .