台州十校联盟2024学年高二第一学期期中联考信息技术试题及答案

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第四部分写作第一节Last week our school held the Sports Week. We hade: lots of activities, such as running, hiking, and many kindsof ball games. We even had an exciting two-day sportsmeeting.Nowadays students are busy with their studies anddont get much exercise. This really worries our schoolauthority. So our school started the Sports WeekThe Sports Week proves to be a great success. It notonly builds up our bodies, but trains our characters aswell. Without health, there is no real happiness in life. Weshould work out regularly to keep fit.

17C【解析】当细胞内某酶促反应的产物过多时,可能与酶结合.改变其分子结构,进而调节酶的活性,也可能通过影响环境来调节酶的活性.从而抑制该酶促反应的进行·这属于负反馈调节;水体污染导致部分鱼死亡.死鱼腐烂后又会进一步加重污染并引起更多鱼的死亡,这属于正反馈调节;人体受寒冷刺激后,下丘脑产生促甲状腺激素释放激素,作用于垂体,使其产生促甲状腺激素,促甲状腺激素作用于甲状腺使其分泌较多的甲状腺激素从而使机体产生更多热量维持体温恒定,这属于激素的分级调节,不属于反馈调节;某动物种群数量的增加导致其天敌由于食物增多而大量繁殖,反过来抑制了该动物种群数量的增加,这属于负反馈调节。故选C。