 |
討論內容: |
I live in London converted harden tadacip generica bough If economic growth followed historical patterns and if America could bring its students up to German standards, that would generate an increase in the average American worker璽??s income by 12% every year for the next 80 years. Reaching Canada璽??s performance level would increase U.S. worker income by an average of 20% annually in that period.
|