在生产观念中，企业的核心任务是提高产品数量，降低成本，扩大销量。
参考答案：对
If they ______ what I was saying, they'd know what I was talking about. [ ]
A. took the trouble to listen to
B. had trouble listening to
C. take the trouble to listen to
D. have trouble listening to
在上海证券交易所发行股票的有限责任公司应当在每一季度结束后的5个工作日内，向社会公布因可转换公司债券转换为股份所引起的股份变动情况。( )
