县级征兵办公室通常于新兵起运前()日组织新兵集中,按照新兵去向、人数进行编组,核对档案,发放被装物资,明确有关注意事项。
A.1
B.2
C.3
D.4
参考答案:A
方程x2-5x-6=0的两根为[ ]
A.6和-1
B.-6和1
C.-2和-3
D.2和3
Mr. Brown had got a __________ and he went to see a dentist.
A.headache
B.toothache
C.stomachache
D.fever