2021-2022 英语周报 高二 外研XB 2答案

第一节The apple trees have a good harvest in Qingshan Village, which is located near the drinking water sourcesmethods guaonditions contribute to the apples' good quality-big in size, red and tasty. The green farmingThe pnce ranges from s I per pound to 1.5 per pound, varying from its variety, not expensive butreasonable. The more you order, the more discount you will enjoy. We promise to pay 5% of delivery fee andyour inquiry will receive our timely responseLooking forward toyour purch

10.B【解析】图中信息可知,甲状腺激素的分级调节过程存在反馈调节机制,A正确;甲状腺细胞只有TSH的受体,没有TRH的受体,TRH和TSH两种激素不能协同促进甲状腺激素的泌,B错误;器官A是垂体,能作用于垂体的信息分子除TRH外,还有促性腺激素释放激素、神经递质等,C正确;由于甲鼠中TRH的含量上升、TSH、TH的含量都偏低,可见该鼠体内TH含量降低的时候能促进下丘脑的分泌,不能促进垂体的分泌,垂体最可能发生病变,同理可知,小鼠乙下丘脑、垂体正常,可能甲状腺发生病变或食物中缺碘,D正确

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