听力原文：How long does it take you to go to the office？
(5)
A. Two kilometers.
B. Ten minutes.
C. It's not far from office.
D. It's a long way to the office.
查看答案
My father does not like______meat.
A. skinny
B. slim
C. lean
D. slender
A．subscribersB．usersC．passers-byD．victims
A. subscribers
B. users
C. passers-by
D. victims
A．incidentB．questionC．inferenceD．impact
A. incident
B. question
C. inference
D. impact
设A为n阶实矩阵，AT为A的转置矩阵，则对于线性方程组(I)AX＝0和(Ⅱ)ATAx＝0必有()．
A. (Ⅱ)的解是(I)的解，但(I)的解不是(Ⅱ)的解
B. (Ⅱ)的解是(I)的解，(I)的解也是(Ⅱ)的解
C. (I)的解不是(Ⅱ)的解，(Ⅱ)的解也不是(I)的解
D. (I)的解是(Ⅱ)的解，但(Ⅱ)的解不是(I)的解
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