The mountains form a natural between the two countries so they have no trade relations in history.
#6961
A
exchange
B
bridge
C
barrier
D
fence
推荐题目
Brian is so kind that he often gives me a ________ when I'm in trouble.
#7130
A
reply
B
seat
C
hand
D
reason
Nowadays people have to pass various tests for professional __________ so that they can be qualified for a well-paid job.
#6940
A
certificates
B
permission
C
admission
D
perseverance
One thousand dollars a month is not a fortune but will help cover my living ____________.
#5948
A
bills
B
expenses
C
prices
D
charges
It struck me like a blow when I saw his ___________ on the legal document which sold our house to another family.
#5421
A
identifications
B
initials
C
recognitions
D
characteristics