Now more and more familier have only one child.Though it has greatly settled down many social problems,it also causes a hidden trouble-the spoiled child.
If you go out to the field at ni ght inspring or summer,you can hear frogs croaking and singing joyfully here and there.It seems as if they were performing a fiel dsymphony (交响曲).How pleasant and sweet it sounds!It fills nature with music and vitality.
