题目

激素之间作用相同，使作用效果加强称为协同作用。下列是某同学对人体内具有协同作用关系的激素所作的归纳，其中有误的是（ ）A. ① B. ②③ C. ③④ D. 无法确定 答案：【答案】A【解析】胰岛素能促进肝细胞、肌肉细胞、脂肪细胞等组织细胞摄取、贮存和利用葡萄糖，还抑制非糖物质转化成葡萄糖，从而使血糖浓度降低；甲状腺激素的主要作用是促进新陈代谢，促进生长发育，提高神经系统的兴奋性；肾上腺素可促进机体代谢，增加产热；胰高血糖素主要作用于肝脏阅读下面短文，从每题所给的四个选项（A、B、和C）中，选出最佳选项。This is Paul and Ben． They are twins(双胞胎)．They are twelve． This is their bedroom． It’s a nice room． There are two beds in the room． The yellow bed is Paul’s and that green one is Ben’s．T he twins have one desk and two chairs． The chairs look the same． Paul’s sweater is on his bed． Ben’s coat is on his chair． Their clock, books and pencil-cases are on the desk． Their school bags are behind the chairs．【1】Paul and Ben are ________．A． friendsB． brothersC． sisters【2】Paul and Ben have ________．A． two chairs and one deskB． two desks and one chairC． two chairs and two desks【3】Paul’s ________ is yellow and Ben’s ________ is green．A． chair; bedB． sweater; sweaterC． bed; bed【4】Paul’s sweater is ________．A． on his bedB． on Ben’s bedC． on the chair【5】Which is right（正确的）?A． They are in the same room．B． Their two beds look the same．C． Their school bags are under the chairs．