According to the text it is believed that China’s

According to the text,it is believed that China’s poverty is partly caused by______.

A.China failed to develop a single written language based on phonetics

B.a Chinese child is supposed to learn much more words than his English speaking counterpart

C.enormous differences in Chinese dialects

D.the Chinese language system has no relation to sound

E.educate more people to learn the same language

F. there is only a small part of the population who understand the large number of symbols