关于创伤一期愈合增生和瘢痕形成正确的是（）
A.无感染故无炎症，仅有表皮再生，无肉芽组织生长
B.无感染，有轻度炎症，表皮再生先于肉芽组织生长
C.无感染故无炎症，表皮再生先于肉芽组织生长
D.无感染，有轻度炎症，肉芽组织生长填平伤口后表皮再生覆盖
E.无感染故无炎症，肉芽组织生长填平伤口后表皮再生覆盖
参考答案：B
解析：一期愈合无感染，但因有少量的组织破坏和出血，可引起轻微的炎症反应。表皮再生在24～48小时内便可将伤口覆盖，肉芽组织从第3天开始从伤口边缘长出，并很快将伤口填满，5～6天胶原纤维形成（此时可拆线），2～3周完全愈合，留下一条线状瘢痕。
Tina was a seventeen-year-old girl who always wore a bright smile. She suffered from a disease and had to use a walker most of the time. Maybe it was because she looked and people didn’t know how to come near toher. Tina usually broke the ice with people she met with a big “ ” In one class, I gave the students an assignment (作业) to a poem. I only made the assignment worth a very small part of their total grade since I knew most of my would not do it anyway. In the class, one by one each student to correctly recite (背诵) the poem. Finally, angry and half joking, I said that the next student who recite the poem had to do three push-up (俯卧撑). To my , Tina was next. She used her walker to move to the front of the class. she recited, she made a mistake. Before I could say a word, she her walker and started doing push-ups. I wanted to say, “Tina, I was just !”But she , continued the poem and she finished the rest perfectly. When she finished, a student asked, “Tina, why did you do that? It’s not an important assignment!” “Because I want to be like you guys! To be .” Tina said. Silence fell on the whole room when another student cried out, “Tina, we’re not normal! We are teenagers! We get in all the time.” “I know,” Tina said as a big spread across her face. The rest of the students laughed, too. Tina got only a few that day, but she got the love and respect of her classmates. To her, that was worth a lot more than a grade. 
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