轧制钢板的宽度愈宽，则轧机的刚性系数下降越多。
参考答案：错
Mary didn't go to John's birthday party because she ______. [ ]
A. wasn't invited
B. didn't invite
C. isn't invited
大事记是按照()，简要地记载一定历史时期发生的重大事件的参考资料。
A、时间顺序
B、文号顺序
C、分类顺序
D、内容重要程度
