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【简答题】
已知线性方程组 无解，则a=______．
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反馈参考答案：
举一反三
【单选题】He felt that there __ something wrong about it.
A.
is
B.
have
C.
must be
D.
must have
【简答题】He must have felt that shock of recognition in her . (Para. 2) He must have felt _____ in ______him.
【单选题】It is _______ it was yesterday.
A.
as beautiful day as
B.
as a beautiful day as
C.
as beautiful a day as
D.
beautiful as a day as
【简答题】西餐礼仪有哪些?(请至少写出五条)
【单选题】He failed in the driving test again. He _____. [ ]
A.
must have disappointed
B.
must have been disappointed
C.
might be disappointed
D.
couldn't be disappointed
【简答题】下列不属于储位分配原则的是()。
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