前瞻性的研究容易产生的偏倚是

A．选择偏倚
B．信息偏倚
C．混杂偏倚
D．报告偏倚
E．失访偏倚

Napping is one of the best, most underused tools for busy people. It is frowned 62 by many people and is viewing as something for the elderly and children. Mention napping and you could be seen as lazy, depressed and 63 to work. The majority of people experience drowsiness in the afternoon and notice their productivity and 64 starting to slip and napping will help 65 this and fight the 66 of fatigue such as stress and a lack of mental 67 .
Research on napping is 68 showing positive effects. The results suggest, for example, 69 napping can make you more 70 , reduce stress and improve 71 functioning compared to working all day without rest. A mid-afternoon sleep means that productivity can last long into the night.
Finding 15-30 minutes in a day can sometimes seem difficult, 72 , doing so could mean a great deal to your productivity. Even 10 minutes a day will be better than nothing at all, and may give you the 73 you need to be successful. If you want to give it a try, make sure you can find a 74 place before setting your head down. If you can feel secure and let go, then the nap will be even more 75 .
A lot of people who wish to start their own businesses but are currently working 9-5 will benefit 76 a nap. The majority of the work on their own business will be done after 5pm and it is hard to stay 77 and inspired at this time. Taking a nap during a 78 at work or just after finishing work could 79 increase your 80 levels, allowing you to 81 your own business after the 9-5 grind.

A．farther

B．fabricate

C．suspend

D．further