脘腹胀闷疼痛，攻窜不定，痛引少腹，脉弦，治疗当选
A．大建中汤B．小建中汤C．柴胡疏肝散D．少腹逐瘀汤
参考答案：C
— What are you doing now?
— I _______________. [ ]
A. went fishing
B. take pictures
C. am reading books
如果投资者预测股市将大幅下调，投资组合β系数将变大。（）
