关于鳞状上皮细胞癌的说法,错误的是()。
A.老年女性多见
B.生长缓慢,转移晚
C.多为中心型,易空洞化
D.对放疗、化疗敏感性差
E.与吸烟关系密切
参考答案:A
_____ computer games, his parents were very worried about his study.
A.Addicted to
B.He addicted to
C.His addicted to
D.Addicting to
桥梁基础当采用长方形沉井时,为保持其下沉的稳定性,对沉井长边与短边之比有一定的要求,问下列四种长短边的比值中以哪一种比值为最好()
A.3倍
B.2.5倍
C.2倍
D.1.5倍