题目

Children are losing the ability to play properly because they are being given too many toys and games, according to a new research.     The studies show that children, especially those under five, are often overwhelmed (不知所措) and actually play less than those with fewer toys. It may even harm their development. The studies show that giving children too many toys or toys of the wrong type can actually be doing them harm. They get overwhelmed and cannot concentrate on anything long enough to learn from it.     The conclusions have been backed up by British research looking a（2012?汨罗市模拟）9 公顷=0.090.09 平方千米  3吨40千克=3.043.04吨34小时=4545分钟     1250毫升=1.251.25立方分米=11升250250毫升．