31. —How long_________each other before they_________married?

—For about a year.

A．have they known, get

B．did they know, were going to get

C．do they know, are going to get

D．had they known, got

加快从经济大国走向经济强国，具体应该（）。

A、坚持稳中求进总体基调，保持经济平稳健康增长

B、坚持提高经济质量基本方针，实现创新驱动经济新常态

C、坚持防范经济风险基本思路，提高经济稳步发展的信心

D、坚持全面深化改革基本方向，增强经济发展内生动力