THREE:They looked at the Falls from all the points of view. They went under the Canadian side, and they also went under the Central Fall, and into the Cave of the Winds. They stood for a long time watching the water tumbling over Horseshoe Fall, and they stood equally long on the American side. When the day was ended, the boys asked the Doctor if he would not permit them to remain another twenty-four hours.An envelope sealed with sealing-wax, unless it has also a wrapping of twine or tape whose only knot is under the seal, can be opened without breaking the seal. Gholson had once told me this. Hold a thin, sharp knife-blade to the spout of a boiling tea-kettle; then press the blade's edge under the edge of the seal. Repeat this operation many times. The wax will yield but a hair's-breadth each time, but a hair's-breadth counts, and in a few minutes the seal will be lifted entire. A touch of glue or paste will fasten it down again, and a seal so tampered with need betray the fact only to an eye already suspicious.
1 5~2岁是儿童分享行为能力发展的关键期,父母要抓住这个时期,在日常生活中加以引导。教宝宝怎样与他人分享自己喜欢的东西。