2022高一课标英语周报第50期答案

4.D【解析】本题主要考查动物激素,考查学生的理解能力。促胰液素是第一个被发现的动物激素,A项错误;刺激小肠黏膜分泌促胰液素的有效成分是盐酸B项错误;胰岛B细胞膜上没有促胰液素的受体.促胰液素的相关受体在胰腺的细胞膜上,C项错误;促胰液素弥散到体液中后,会随血液流到胰腺.D项正确。

第一节One possible versionDear Ms JenkinsI'm writing to ask you for help. Our school is going to sponsor an exhibition of Chinese paintings in theschool library next month. As president of the student council, i have been assigned the job of drafting an arnouncement in English as there aredreds of international students in our schoohave already written a rough draft of the above-mentioned announcement. But I'm afraid that there aresome mistakes in the English language. So I am hoping you would correct my possible mistakes in the announce-ment that i have attachedId appreciate it if you could do me the favocerely yourLIH

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