两个连在一起的皮带轮，大轮直径是3分米，小轮直径是1分米2厘米，大轮转1周，小轮要转（ ）周。
2.5
郁证气郁化火证的治疗可选用（）
A.丹栀逍遥散
B.甘麦大枣汤
C.半夏厚朴汤
D.滋水清肝饮
E.天王补心丹
I don’t believe these people have achieved success __________. They must have put much effort into their work.
A．by coincidence
B．as usual
C．in particular
D．on purpose
