积极思维就是接受任务不讲价钱，完不成任务要查找出客观原因，尽全力做好工作.
参考答案：错
___ travel can broaden your mind , I don’t think it’s a good idea to spend too much time and money
on it . [ ]
A. If
B. While
C. Because
D. As
肾结石有何X线表现?需与哪些阴影鉴别?
