建设中国特色社会主义伟大实践的经验,集中到一点就是[ ]
A、坚持党的领导不动摇
B、坚持三个代表指导思想
C、坚持基本路线不动摇
D、坚持以经济建设为中心
答案:C
下列表示毒性反应指标中,错误的表述是()。
A.死亡率
B.发生率
C.阴性或阳性
D.患病率
E.阳性率
If Newton lived today, he would be surprise by what () in science and technology.
A. had discovered
B. had been discovered
C. has discovered
D. has been discovered