The Silk Road has been a bridge between the East and the West over 2，000 years．（ ）
| A． |
at |
B． |
for |
C． |
in |
D． |
from |
The Silk Road has been a bridge between the East and the West over 2，000 years．（ ）
| A． |
at |
B． |
for |
C． |
in |
D． |
from |
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