【简答题】atives. Man cannot go on __1_ his numbers at the present rate, In the _2_ 30 years man will face a period of cr. __3_ experts believe that there will be a widespread food _4_ . Other experts think...
【简答题】For some people, music is no fun at all. About 4% of the population is what scientists call “amusic”. People who are amusic are born without the ability to enjoy musical notes. Amusic people often can...