The voyages of travellers before the 17th century show that they were not ________ the sea even though they didn’t have modern navigational aids.
#26840
A
at the expense of
B
at the risk of
C
in the way of
D
at the mercy of
推荐题目
I’ll be free ___ seven o’clock.
#28796
A
after
B
on
C
in
D
at
Which book is much better      quality?
#26585
A
In need of
B
in case of
C
in terms of
D
in favor of
It is amazing that the little boy can swim ________the river ________100 meters in width. 
#25840
A
across; measuring
B
over; measured
C
across; measure
D
through; measuring