一个优秀的社区工作者不仅在居委会中具有专业的实务能力,还需要具备一定的()能力。
参考答案:沟通
The guard at the entrance didn’t ______ me in though I had begged him many times. [ ]
A. agree
B. permit
C. allow
D. make
短期无风险利率越高,看涨期权的价格就越低。 ( )