【简答题】With the world’s population estimated to grow from six to nine billion by 2050, researchers, businesses and governments are already dealing with the impact this increase will have on everything from f...
【简答题】短文填空。 Tom and Fred are t l about the year 2050. 'What will the world be like in the year 2050?' asks Tom. 'I don't know,'says Fred. 'What do you t 2 ?' 'Well, no one knows. But it is interesting to g...