第6题: [单项选择]There was a terrible ______ as the crowd waited to hear who had been killed in the accident. A. impression B. diffusion C. tension D. stimulation 参考答案:C 答案解析:本题测试名词辨义。impression意为“印象”;diffusion意为“传播 ;tension意为“紧张状态”;stimulation意为“刺激”i本句大意为:人们紧张地等待,想知道究竟是谁在事故