As more roads have been widened,traffic pressure on the roads was _____ to some degree

As more roads have been widened,traffic pressure on the roads was _____ to some degree

题目
As more roads have been widened,traffic pressure on the roads was _____ to some degree
A.relieved
B.relaxed
C.declined
D.improved
选哪个?为什么?
答案
A
意思是 缓解
A.relieved
B.relaxed 放松
C.declined 下降/拒绝
D.improved 提高
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