559.________ economic,political and cultural differences,it is difficult for China and America to fully understand each other.

A.In spite of

B.Regardless of

C.On account of

D.In terms of

560.Although he is often tired _____ his work,he is never tired _____ his job.In fact,he enjoys it.

A.of;with

B.with;from

C.with;of

D.at;with

559.答案是C;

考查介词短语在具体语境中的运用。in spite of 虽然，尽管；regardless of 不顾，不管；on account of由于，因为；in terms of用…的措辞，就…而言，根据，依据。根据句意，选C。

560.答案是C;

be tired with 因…而疲劳；be tired of...=be bored with厌烦。