Question

【題目】An artist who was recently traveling on a ferry to the southern island discovered ______ a long lost antique Greek vase.
A.at random
B.by chance
C.in turn
D.on occasion

Answer 1

【答案】B
【解析】句意：一個在南部島上旅行的畫家偶然發(fā)現(xiàn)了一只古希臘花瓶。at random“任意地，隨便地”；by chance“偶然地，意外地”；in return“反過來，作為報答”；on occasion“有時， 間或”。根據(jù)句意選B。