单项选择题
A．July and September B．October and December C．January and March D．April and June
A．made to begin a new year B．a promise to make a joke C．a decision to improve oneself and make one a better person D．to be kept for the New Year's Day only
A．to take an experienced pilot in a plane B．to be taken up into the air in a plane by an officer C．to fly a commercial plane D．to talk about his ideas