The promise of finding long-term technological solution（ ）the problem of world food safety seems difficult to fulfill.
A、
to
B、
for
C、
of
D、
at
【正确答案】：A
【题目解析】：
本题考查solution后面的介词，solution to：...的解决方案，选A。句意：要找到长期的技术解决世界食品安全问题的承诺似乎很难实现。
The promise of finding long-term technological solution（ ）the problem of world food safety seems difficult to fulfill.
The promise of finding long-term technological solution（ ）the problem of world food safety seems difficult to fulfill.
to
for
of
at
本题考查solution后面的介词，solution to：...的解决方案，选A。句意：要找到长期的技术解决世界食品安全问题的承诺似乎很难实现。