According to some recent reports，the urban masses，particularly middle--考呗网

单选题According to some recent reports，the urban masses，particularly middle-class women，are continuing their spirited____________of new products．

1The manager of the company firmly believed that one of the important____________sources of new customers was the children’S market．

2It’s commonly acknowledged that infant mortality has declined because of recent medical____________and a higher standard of living．

3They believe that businesses have to find new____________and take advantage of every selling technique that might lead people to buy．