这时BROWSING 就是浏览的意思,是BROWSE的动名词形式.它还其它两个意思：1) looking at a lot of thing in the store or shop rather than looking for one particular thing
2) (of cows,goats,etc)eating leaves,etc.
所以答案是选D
还有B STARING 是STARE的ING 形式,IT MEANS ：TO LOOK AT SB/STH FOR A LONG TIME