单项选择题
A．to spend five minutes checking the car before you leave B．to carry some emergency spares with you C．to buy a cheap set of spares before leaving D．to prevent all breakdowns from happening
A．significant but indirect influence B．principal authorship C．sole authorship D．distant and essentially unimportant influence
A．with a moment of sudden realization of inspiration B．with the knowledge of what is needed C．after you have climbed some muntains D．when you have climbed some mountains