The relationship between employers and employees has been studied____。

A. that B. what C. which D. all

A. taking off B. setting aside

C. getting along with D. putting out

A. trim B. improve C. refine D. repair

A. business B. purchase C. bargain D.sale

A. working B. works C. to work D. worked

A.ate more food and had more physical activities

B.ate less food but had more activities

C.ate less food and had less physical exercise

D.had more weight problems

A.Yes,there is plenty of evidence.

B.Of course,there is some evidence to show this is true.

C.There is hardly any scientific evidence to support this.

D.We don't know because the information is not given.

A.they are too slim

B.they work too hard

C.they are too fat

D.they lose too much body fat

A.it can avoid redesigning computer chips

B.it can save a lot of time and money

C.it can avoid making mistakes

D.it is more like the human brain

A.the conventional computer and the neural computer

B.making decisions and recognizing patterns

C.sharing information and performing tasks

D.the computer and the human brain