题目

若a2+a﹣1=0，则代数式a4+3a的值为． 答案：【1】2中考临近，Tom经常很烦闷，晚上睡不着，上课注意力不集中，经常想着万一考不上怎么办？于是他给某报社的心理医生Mr. Green写了一份e-mail进行咨询，希望他能给自己一些建议，以便在冲刺阶段能全力以赴。 Dear Mr. Green, I’m sorry to trouble you. You know there will be a/an    1   exam this term. But it seems that everything goes wrong with me. I can’t fall    2   at night and I can’t listen to the teachers carefully. I am always    3   about my grades. I know it is not good to do so, but I can’t control myself.        __________________      4    _____________________________         ? (此空格不限字数) Write to me soon. Best wishes to you ! Yours,                                                                     Tom