The airline stewardess (空姐) said to passengers on with a beautiful smile, “wele !”
A. aboard; board
B. board; aboard
C. board; board
D. aboard; aboard
网友回答
A. aboard; board
(答案→)B. board; aboard
C. board; board
D. aboard; aboard
解析：词义辨析。固定词组On board在船,火车,飞机上(的)；aboard登船，登飞机；句意：航空公司的空姐微笑着对飞机上的乘客说：欢迎登记。