A good breakfast is i( ).A test was given in the United States s short time ago.People of d( ) ages,from 12 to 83,were asked to have the test.During the test,they were given all kinds of breakfast, and s( ) they got no breakfest at all.Scientists wanted to know how well their bodies worked when they had eaten different k( ) of breakfest.The results show that if a person eats a right breakfast,he or she will work b( ) than if he or she has no breakf

A good breakfast is i( ).A test was given in the United States s short time ago.People of d( ) ages
,from 12 to 83,were asked to have the test.During the test,they were given all kinds of breakfast, and s( ) they got no breakfest at all.Scientists wanted to know how well their bodies worked when they had eaten different k( ) of breakfest.
The results show that if a person eats a right breakfast,he or she will work b( ) than if he or she has no breakfast .If a student has fruit ,bread and milk before going to school,he will learn more quickly and listen more c( ) in class. 缺词填空