中标合同不得对招标文件及中标人的承诺进行（）改变，并应当作为中标人取得的道路客运班线经营行政许可决定书的附件。
参考答案：实质性
关于早期复极综合征的表述，不正确的是（）。
A.大多属于正常心电图变异
B.心电图上主要表现为J点和ST段抬高及T波高耸
C.心率加快后，J点和ST段抬高加重
D.ST段抬高在Ⅱ、Ⅲ、aVF、V2～V5导联表现明显
E.主要由左心室心尖和前壁在左心室除极尚未结束前即开始复极引起
根据首字母及汉语提示，完成下列单词的拼写，使句意明确，语言通顺。
小题1:Sorry, I can’t follow you. Would you please speak more (缓慢地)?
小题2:Bob was very careless. He made so many (错误) that he failed the exam.
小题3:Reading English aloud every day will of course help you to improve your (发音).
小题4:I had no chance to r (回答) to his question.
小题5:Tony is always friendly and h （有帮助的） to others.
