题目:A.It can reduce the number of passenger complaints.
B.It can make air travel more entertaining.
C.It can cut clown the expenses for air travel.
D.It can lessen the discomfort caused by air travel.
A:It
题目:A.It can reduce the number of passenger complaints.
B.It can make air travel more entertaining.
C.It can cut clown the expenses for air travel.
D.It can lessen the discomfort caused by air travel.
A:It