天然堤沉积向（）一侧的坡度较平缓，颗粒较细，厚度较薄，逐渐向河漫滩过渡。
A、河床
B、河漫滩
C、心滩
D、边滩
参考答案：B
______ his father, David Beckham ______ playing football. [ ]
A. Like, likes
B. Likes, likes
C. Like, like
D. Liking; like
OD调查，是一项了解交通的（）和（）在有关区域里所做的调查。
