The librarian took a story book from the shelf and gave it to the girl.
A. in vain
B. at random
C. at the moment
D. at any rate
网友回答
A. in vain
(答案→)B. at random
C. at the moment
D. at any rate
解析：句意，图书管理员随意从书架上取了一本故事书，递给了这个女孩。in vain徒劳无益地at random随意地at the moment目前at any rate无论如何，根据题意，故选B。