2022-2022英语周报七年级外研答案

30.(1)温度、pH和渗透压(1分)(2)胰高血糖素和肾上腺素(2分)血糖低,脑细胞能量供应不足(2分)(3)体液免疫和细胞(2分)自身免疫病(1分)[(1)内环境的理化性质主要包括温度、pH和渗透压。(2)正常情况下,血糖降低时,会直接刺激胰岛A细胞分泌胰高血糖素,还可刺激下丘脑,通过神经调节,刺激肾上腺分泌肾上腺素,促进肝糖原分解和非糖物质转化,使血糖恢复正常。低血糖症状一般表现为头晕、心慌、四肢无力等,其中头晕的原因是血糖浓度低,脑细胞能量供应不足。(3)某糖尿病患者由胰岛B细胞损伤引起,患者血液中含有抗胰岛B细胞的抗体和效应T细胞,据此推测:胰岛B细胞的损伤是机体通过体液免疫和细胞免疫导致的;这种糖尿病是由于免疫系统攻击自身细胞导致的,故属于免疫异常中的自身免疫病。]

书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

以上就是2022-2022英语周报七年级外研答案，更多英语周报答案请关注本网站。