Many hunting and gathering people of the late 20th century have recently adopted some form of organized agriculture to ______ their wild food resources.

A．Friday
B．Thursday
C．Wednesday
D．Tuesday

A．Scientists agree that the Cognitive Development Program once carried out will surely revolutionize education
B．Thinking can be taught
C．Thinking courses may give students great help
D．Scientists are optimistic about the results of their research

A．lack basic needs for energy and protein
B．lack essential micronutrients
C．unsafe or unbalanced diets
D．remedies