题目

Were you the first or the last child in your family? Or were you a middle or an only child? Some people think  ____61 ___  matters where you were born in your family. But there are different ideas about what birth order means. Some people say that oldest children, ____62 ___ are smart and strong-willed, are very likely  ____63 ___  (succeed). The reason  ____64 ___  this is simple. Parents have a lot of time for their first child and give him or her a lot of attention. An only child will succeed for  ____65 ___   same reason. What happens to the  ____66 __一个标有“220V 40W”的用电器接在电压为110V的电路中，若它的电阻保持不变，则实际功率为    W．