23. A. thought B. designed C. considered D. supposed

A. ①—①，②—②，③—③，④—④，⑤—⑤ B.①—③，②—①，③—④，④—⑤，⑤—② C.①—①，②—③，③—④，④—⑤，⑤—② D.①—③，②—①，③—⑤，④—②，⑤—④

A. promote its production
B. work out marketing policies
C. speed up its life cycle
D. increase its popularity