单项选择题A．The spacecraft will fly direct to Mercury.B．The spacecraft will fly three times past Mercury.C．The spacecraft was launched a week later than planned.D．There is no specific task for this journey.

填空题将or改成nor。

单项选择题A．speechesB．mournful musicC．paradeD．visit

单项选择题A．sixB．nineC．twelveD．sixteen

单项选择题A．they like investmentsB．they like challengesC．they like the jobD．they like the rural area