一个完整的认识过程，需要经过两次飞跃。下列选项中属于第二次飞跃的是（）
A.进行社会调查
B.分析实际情况
C.理论付诸实践
D.总结经验教训
参考答案：C
麦门冬汤中配伍半夏的意义在于（）
A.和胃降逆
B.降逆化痰
C.化痰散结
D.散结除痞
E.燥湿化痰
In our own galaxy, the Milky Way, there are perhaps 200 billion stars, a small part of them probably have planets on which life is feasible.
A．a small fraction in which
B．a small fraction of which
C．a small fraction which
D．which a fraction of
