问题 单项选择题

某患者外伤失血,表现为血压下降、心率加快、神志尚清,估计失血量占总血量的20%左右,此时机体发生的应急反应是()

A.颈动脉窦传入冲动增多

B.肾素分泌增多

C.迷走神经传入冲动增多

D.颈动脉体传入冲动增多

E.外周血管扩张

答案

参考答案:B

写作题
书面表达。
     假设你是珍妮,中考后你将参加赴英国的“名校之行”夏令营活动。请你根据以下表格提供
的信息准备一篇在开营仪式的自我介绍发言稿。
     注意:1、词数:60-80左右。
               2、发言稿的开头和结尾已给出,不计入总词数。
               3、可根据内容适当发挥。
Name Age Free time activities Future job Hope Favorite subject
Jenny 15 draw pictures of animals
enjoy the singing of birds
in nature listen to music
read English books…
teacher make good friends … English

Dear Friend,
     I'm very happy to be in this Summer Camp to know about the famous universities in London. I'm glad
to introuduce myself to you.                                                                                                              
                                                                                                                                                       
                                                                                                                                                       

     That's all. Thank you for listening.

选择题