读图，回答问题

（1）根据经济发展水平的差异，世界上的国家分为                国家和               国家，中国属于               

    国家。

（2）发展中国家人口占世界总人口的          %，但国内生产总值仅占世界的          %。

（3）发达国家人口占世界总人口的          %，但国内生产总值却占世界的          %。

（4）这幅图说明了什么问题？                                                                                                                 

（5）对世界承担责任更多的应该是                            （发达国家或发展中国家）。

Mobile computers-which (71) laptops, notebooks, subnotebooks and handhelds- (72) so ubiquitous in such a short time, no surprise to hear who say: "It will define the leading edge (73) the next five years or so." The most remarkable (74) mobile computers is the amount of data storage and memory packed (75) their tiny boxes. These devices not only handle windows easily but also run storage-hungry programs.

A．included

B．include

C．have included

D．have become

E．had become