Not until the problem of talents and funds is solved, is our talking about the project meaningful．（）

单项选择题During which period of time will the percentage of Americans 65 years old or older increase the most（）

A. 1970-1990.
B. 1990-2010.
C. 2010-2030.
D. 2030-2050.

单项选择题On what day will the man be able to see Professor Kent（）

A. Next Tuesday.
B. Next Thursday.
C. Next Wednesday.
D. Next Friday.