有关慢性咽炎的诊断一下哪项是错误的()
A.详细询问病史
B.排除隐匿性病变
C.警惕早期恶性肿瘤
D.根据症状
E.仔细体格检查
参考答案:B
求过两直线x-2y+4=0和x+y-2=0的交点,且分别满足下列条件的直线l的方程.
(1)直线l与直线5x+3y-6=0垂直;
(2)坐标原点与点A(1,1)到直线l的距离相等.
John was________to learn the news that he was rejected by the committee.[ ]
A.let down
B.put down
C.noted down
D.taken down