All the silk produced by spiders construct webs to catch their food,

A．Plugging poor countries into the Internet will help them to become rich rapidly.
B．Poor countries should be given more basic devices other than advanced ones.
C．Rich countries should help poor ones becoming rich.
D．People in poor countries cannot afford devices such as computer.

A．Digital technology is useless.
B．Digital divide will help poor countries becoming rich.
C．Poor people need more immediate concerns, such as food, health care and security.
D．Mobile phones should be promoted firstly.