It’s commonly acknowledged that infant mortality has declined because -考呗网

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

1They believe that businesses have to find new____________and take advantage of every selling technique that might lead people to buy．

2Despite a flurry of diplomatic activity in Geneva，prospects for a peace settlement seemed as____________as ever．

3Many modem TV viewers complain about____________that have constantly interrupted and destroyed their viewing the programs．