问题
单项选择题
在根尖及根中1／3根折的转归中，下列叙述哪项是正确的（）
A.两断端由钙化组织联合，与骨损伤的愈合很相似
B.结缔组织将各段分开，断面上有牙骨质生长，但不出现联合
C.未联合的各段由结缔组织和骨桥分开
D.断端由慢性炎症组织分开，根端多为活髓，冠侧段牙髓常坏死
E.以上均正确
答案
参考答案：E
搜题请搜索小程序“爱下问搜题”
在根尖及根中1／3根折的转归中，下列叙述哪项是正确的（）
A.两断端由钙化组织联合，与骨损伤的愈合很相似
B.结缔组织将各段分开，断面上有牙骨质生长，但不出现联合
C.未联合的各段由结缔组织和骨桥分开
D.断端由慢性炎症组织分开，根端多为活髓，冠侧段牙髓常坏死
E.以上均正确
参考答案：E
Remind children that bad things don’t last. It may sound simple, but the message is extremely important. “Children often don’t have the experience to know that when something bad happens—they lose an important game or their best friends lets them down—it’s not the end of the world,” explains Nancy Leffert, a senior research scientist with the Research Institute, an American adolescents’(青少年) and children’s research group. “They think their bad feelings will last for ever， or that one failure will ruin everything.”
Unfortunately, that kind of thinking discourages motivation(动机).“If a child believes that the cause of her upset is lasting, or that nothing she does will make a difference, it decreases her ability to keep on trying,” says Dorothy Rich, president of the Mega Skills Education Center of the Home and School Institute, based in Washington. Any time you can help your child see that a situation is not lasting, that a result can be changed, or that one opinion does not reflect reality, you give her reason to hope.