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问题 选择题

Mary used to ______ computer games outside on weekends, but now he is used to ______ his

homework at home. [ ]

A. playing, do

B. playing, doing

C. play, doing

D. play, does

答案

答案：C

单项选择题

对有抗渗要求的混凝土，采用普通硅酸盐水泥拌制的混凝土养护时间不得少于( )d。

A．7

B．10

C．14

D．21
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填空题

以下程序运行后的输出结果是 _______ 。};main(){ struct NODEs[3]={{1,’’\0’’},{2,’’\0’’},{3,’’\0’’}},*p,*q,*r;intsum=0; s[0].next=s+1;s[1].next=s+2;s[2].next=s; p=s; q=p->next; r=q->next;sum+=q->next->num;sum+=r->next->next->num;printf("%d\n",sum);}
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