英语周报第51期人教版答案

5.C【分析】本题考查生命活动调节相关的知识点,熟知体液调节和免疫调节过程是解题的关键,题H难度适中。【解答】A.严币腹泻时导致体内丢失了大量的水和无机盐,所以严币腹泻后,细胞外液渗透压升岛,一方面抗利尿激东分泌增多,促进肾小管、集合管对水分的重吸收,另一方面应及时补充水和钠盐,使细胞外液渗透压恢复正常,A正确;B.侵入人体内的2019nCoV主要会寄生在肺部细胞中,大量增殖会导致肺部细胞受损,在感染者体内会激发特异性免疫,分泌淋巴因子激发产生浆细胞分泌抗体进行体液免疫,产生效应T细胞进行细胞免疫,B正确;C.病毒没有细胞结构,只能寄生在活细胞中生活,所以病褥不能在内环境中迅速增殖,C错误;D.该患者体温上升到38.5℃期间,患者的产热速率大于散热速半,D正确

第二节(满分25分)This special day witnessed our active participation in the community service. As scheduled,we gathered at the school gate early, bringing our cleaning stuff and a willing heart. Then wemarched to the elderly caring center, where we helped mop the floor, dust the furniture and cleanthe windows. We chatted with the senior, and also played chess, practised Tai Chi and madedumplings together with them happily. The highlight of the day, no doubt, was the gala brought bythe music Club membersThis activity is meaningful and joyful. Not only do we begin to take up volunteering, but alsove learn that old people do need our company. It has been a retwarding day and shall benefit us inthe long run.

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