题目

I was in desperate need of a break. The “witching hour” was upon us once again, dinner was burning on the stove, and fights were    41    between my two children. The crying was never- ending and I was    42    the end of my rope. But I was holding down the fort until way after bedtime. I    43    a friend who has four children the same ages as mine, and she was in a similar    44   . Our husbands were    45    the same meeting that night. I could hear the screaming in the    46   , interrupted by Jen’s shouting. She kept    47    the phon如图，a，b是异面直线，画出平面α，使a?α，且b∥α，并说明理由．