治疗肾阳虚之不孕症，应首选
A．毓麟珠B．养精种玉汤C．开郁种玉汤D．启宫丸E．开郁二陈汤
参考答案：A
真理最基本的属性是客观性。 [ ]
---Why does Maria look so tired?
---She missed our school bus, ______she had to walk here all the way.
A．or
B．so
C．but
D．and
