第10题: [单项选择]Questions 22 to 25 are based on the conversation you have just heard.A. She will participate in the protest. B. She will sign the appeal letter. C. She will take part in a meeting of the Student Action Union. D. She will attend her class as usual. 参考答案:D 答案解析:[解析] What will the woman probably do on Thursday aflemoon
第15题: [单项选择]设A是3阶矩阵,X是3维列向量,若向量组X,AX,A2X线性无关,而A3X=3AX-2A2X,则A属于特征值λ=1的特征向量是 ( ) A. X B. A2X+2AX-3X C. A2X-AX D. A2X+3AX 参考答案:D 答案解析:[考点] 矩阵的特征向量 [答案解析] 由A3X=3AX-2A2X得A3X+2A2X-3AX=0,即(
第37题: [单项选择]按照唐律的规定,下列情形的婚姻不为法律所禁止的是()。 A. 县令甲娶其部属之女为妻 B. 士绅乙娶部曲之女为妻 C. 刺史丙娶其原籍民女为妻 D. 民人丁娶同姓民女为妻 参考答案:C 答案解析:唐朝对婚姻缔结有诸多限制,如同姓不婚(D项),非同姓但有血缘关系的尊卑间不能为婚,严禁与逃亡女子为婚,监临官不得娶监临之女为妾(A项),良贱之间不得为婚(B项),故选择C项。