2018-2022HZ高二英语周报答案

23.(9分,除标注外,每空1分)(1)②(2)神经神经递质(3)体液(4)4协同(5)(负)反馈保证激素和酶含量的稳定,保证生命活动的正常进行(2分)【解析】(1)食物直接刺激味蕾,感知食物是生来就有的。看到食物的形状等或噢到食物的味道后引起相应的视觉、味觉,则是后天形成的。(2胃泌素的分泌过程存在一个完整的反射弧,此调节方式属于神经调节,作用于胃窦的信息分子是神经递质。(3)促胰液素通过体液运输,作用于胰腺(4)胰腺细胞的细胞膜上有接受胃泌素、促胰液素、胆囊收缩素、神经递质等物质的受体。这些信号分子都能促进胰腺分泌胰液,具有协同作用〔5)通过反馈调节,可合理调整胆收缩素和胰蛋白酶的分泌量,以确保生命活动的正常进行。

One possible wersionDear ChrisI m more than glad to tell you that in response to thegovernment s call for nationwide fitness campaign, thephysical education teachers in our school are going to teachstudents how to play Tai Chi after regular school hours. Theactivity will be organized on the school playground everyweekday afternoon, lasting an hour from 4: 30 to 5: 30The activity isd at building un our bodies andhelping us have a better understanding of Chinese culture. Ithink it will be useful in relieving our pressure from thestudy. Since you have a great preference for the ancientmartial art, I' m looking forward to your taking part!YLi Hu

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