1. As we know，taking positive attitudes towards life is____________(有益的) to our bodies and minds.
2.As is well known, many___________(致命的)accidents result from carelessness and irresponsibility.
3.Despite the poor service of the hotel, the manager is reluctant(不情愿的)to invest in____________(足够的)training for his staff.
4.Official reports suggest that the number of______________(家庭)with three generations living together had risen from 325 ,000 in 2001 to 419,000 in2013.
5.While high school does not__________(探索）new generally encourage students to aspects of life, college sets the stage for that exploration.
6.For a sudden heart failure, the single best chance for__________(生存）is having someone nearby step in and do CPR quickly.
7.To test the effect of social influence on eating habits，the researchers conducted two_____________(实验)．
8.Conventional__________(智慧) has it that we should save some money for rainy days when we have a lot in hand.
9.He had intended to go to Beijing today, but he ___________(延迟) the trip when he heard that there would be a downpour at noon.
10. The musician__________(指挥) his last concert shortly before his death.
11.The survey__________(conduct) by the company shows there is a large increase in customer satisfaction this year.
12.She__________ ( intend) to clear out the spare room,but she was too busy at that time.
13. Keep in mind that your effort will pay __________.Don't let one or two failures get you down.
14.China's new generation of high-speed trains can travel ________a speed of 350 km/h.
15.I’m sorry to say that I can't finish the work within the__________( limit ) time.
KEY:1.beneficial 2.deadly 3.sufficient 4.households 5.explore 6.survival 7.experiments 8.wisdom 9.postponed 10.conducted 11.conducted 12.had intended 13.off 14.at 15.limited.
