That man ( ) at the bus stop for the last half hour.－－－ Shall I tell him that the last bus ( ) A.has stood … has already goneB.has been standing… has already beenC.is standing… has already goneD.has been standing…has already gone
That man ( ) at the bus stop for the last half hour.－－－ Shall I tell him that the last bus ( )
A.has stood … has already gone
B.has been standing… has already been
C.is standing… has already gone
D.has been standing…has already gone
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to, I, how, last, winter, skate, learned__________________________________________________________________________.
已知last指向单向简单链表的尾结点，将s所指结点加在表尾，不正确的操作是____。A．last-＞next=s,last=s,last-＞next=NULL;B．last-＞next=s,s-＞next=NULL,last=s;C．s-＞next=NULL, last-＞next=s, s=last;D．s-＞next=NULL, last-＞next=s,last=s;
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数组q[M]存储一个循环队，first和last分别是首尾指针，如果使元素x进队操作的语句为“q[last]=x,last=（last+1)%m;”那么判断队满的条件是_____。A．last= =firstB．last= =M-1C．(last+1)%m= =firstD．last+1= =first
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