A youngster’s social development has a profound effect on his academic progress. Kids who have trouble getting along with their classmates can end up behind academically as well and have a higher chance of dropping out (退学). In the early grades especially, experts say, youngsters should be encouraged to work in groups rather than individually so that teachers can spot children who may be having problems making friends. "When children work on a project", says Lillian Kate, an educational professor at the University of Illinois, "they learn to work together, to disagree, to think, to take turns and lighten tensions. These skills can’t be learned through lecture. We all know people who have wonderful technical skills but don’t have any social skills. Relationships should be the first R."
At a certain age, children are also learning to judge themselves in relation to others. For most children, school marks the first time that their goals
A. that it is society rather than individual that decides one's future
B. that they can meet the social needs
C. that one's effort and one's ability can be two quite different matters
D. that social needs and individual needs have nothing in common
When Dr. John W. Gofman, professor of medical physics at the University of California and a leading nuclear critic, speaks of "ecocide" in his adversary view of nuclear technology, he means the following. A large nuclear plant like that in Kalkar, the Netherlands, would produce about 200 pounds of plutonium each year. One pound, released into the atmosphere, could cause 9 billion cases of lung cancer. This waste product must be stored for 500,000 years before it is of no further danger to man. In the anticipated reactor economy, it is estimated that there will be 10,000 tons of this material in Western Europe, of which one table-spoonful of plutonium-239 represents the official maximum permissible body burden for 200,000 people. Rather than being biodegradable, plutonium destroys biological properties.
In 1972 the .U.S. Occupational Safety and Health Administration ruled that the asbestos level in the work place should be lowered to 2 fibers per cubic centimeter
A. nationwide application of anti-pollution devices can finally prevent cancer
B. tough legislation is needed to set lower limits of worker exposure to harmful chemicals
C. more research is required into the causes of cancer before further progress can be made
D. industrialization must be slowed down to prevent further spread of cancer-causing agents
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