问题
选择题
The airline stewardess (空姐) said to passengers on ______ with a beautiful smile, “welcome _________!”
A．aboard; board
B．board; aboard
C．board; board
D．aboard; aboard
答案
答案：B
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。