She needed all her powers of c____to stop herself from slipping on the icy road. (集中;专心)
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Monetary policy hasn't been working because interest rates have been reduced to almost zero without s____the economy. (刺激)
It's the strongest natural f____and can stand very high temperatures and be machine washed. (织物)
So far as l know that people's tastes haven't changed much, and, i____they are getting more diverse these days than they used to be. (要说有什么区别的话)
lt's easier to find excuses for poor customer service than accept r____and do something about it. (现实)