一级支流与二级支流相比()。
A.长
D.短
C.或长或短
D.水量多
参考答案:C
Her new company is far away. She _______ take the subway to work. [ ]
A. must
B. are going to
C. has to
D. would like to
影响汽车服务业发展的因素有:()。