When traveling in the Canadian Rockies by car, I often notice a road sign that says, “A fed bear is a dead bear.”      , I did not get it. Why is a fed bear a dead one? According to a friend, many travelers used to throw their food from their cars for the bears.      , the bears turned to the roadside for food and slowly lost their ability to take care of themselves. When winter came, fewer travelers took to the mountains, which       less food for the bears, some of whom starved or frozen to death. So the Canadian government       warning signs along the road, essentially advising people not to feed the bears.
This reminded me of a scientific experiment. Some white mice were   __    into two groups. One group spent their days only eating and sleeping,       the other, fed only with half the amount of food      , had to search for food. Half a year later, scientists found that the mice that had to search for their own food were         , while the fully fed ones were either ill or dead. It was       that the underfed white mice, in the       of searching for their food, had kept healthy by exercising in finding food, being adaptable, and       their immunity(免疫功能).
Many over-concerned parents are feeding their children like        or white mice. At present, children are only good at reading and studying, and are not encouraged to think independently and act for themselves.       placed in strange environments, they are lost, confused, and helpless. Parents do not understand what it takes to ensure their children’s long-term success. They  __    the most important thing --- and that is how to cultivate their children into   _   adults, so that they can bravely undertake(承担) challenges and succeed in the future.

A．First of all B．In the beginning C．After all D．In the end

A．Normally B．Gradually C．Generally D．Actually

A．proved B．explained C．meant D．gave

A．make up B．take up C．keep up D．put up

A．separated B．divided C．arranged D．determined

A．since B．when C．while D．if

A．available B．regular C．delicious D．necessary

A．alive B．popular C．healthy D．lazy

A．Clear B．sure C．funny D．curious

A．Stage B．process C．aim D．period

A．practicing B．affecting C．reducing D．improving

A．chickens B．tigers C．pigs D．bears

A．Until B．Unless C．Once D．As

A．follow B．forget C．demand D．predict

A．independent B．skillful C．helpful D．successful