【名词&注释】
细胞膜(membrane)、混合物(mixture)、氧化剂(oxidant)、电化学腐蚀(electrochemical corrosion)、原电池(galvanic cell)、答题卡(answer sheet)、化合价(valence)、水龙头(faucet)、糖原分解(glycogenolysis)
[单选题]钢铁生锈过程发生如下反应：①2Fe+O2+2H2O=2Fe(OH)2；
A. ②4Fe(OH)2+O2+2H2O=4Fe(OH)3；
B. ③2Fe(OH)3=Fe2O3+3H2O。
C. 下列说法正确的是
D. 反应①、②中电子转移数目相等
E. 反应①中氧化剂是氧气和水
F. 与铜质水龙头(faucet)连接处的钢质水管不易发生腐蚀
G. 钢铁在潮湿的空气中不能发生电化学腐蚀
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举一反三：
[单选题]阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。A
A. ndy rode slowly on his way to school, day-dreaming about the fishing trip that his father had prornised him. He was so busy dreaming about all the fish he would catch that he was unaware of everything else around him.
B. He rode along until a strange around drew him to the present.He came to a stop and looked curiously up to the heavens.What he saw him.huge swarm of bees filled the sky like clack cloud and the buzzing mass towards him.
C. With no wast.ndy sped off in the opposite direction, riding without knowing how to escape the swarm a rapidly beating heart and his legs pumping furiously down the rough road. s the bees came closer, his panic incread. ndy knew that he was sensitive to bee stings(蜇).The last sting had landed him in hospital-and that was only one bee sting!He had been forced to stay in bead for two whole days.Suddenly,his father’s words came to him.“When you are in a tight situation, don’t panie. Use your brain and think your ways out of it.”
D. On a nearby hill, he could see smoke waving slowly skywards form. the chimney of the Nelson family home.“Bees don’t like smoke,”he thought.“They couldn’t get into the house.”ndy raced towards the Nelson house, but
E. the bees were gaining ground. ndy knew be could not reach the house in time. He estimated that the bees would eatch up with him soon.
F. Suddenly, out of the corner of his eyes, he spotted a small dam used by Mr. Nelson to irnigate his vegetable garden. Off his bike and into the cool water he dived, disappearing below the surface and away from the savage insects. fter holding his breath for as long as he could, ndy came up for air and noticed the bees has gone. Dragging himself out of the dang the struggled up the hilly slope and rang the doorbell. Mr Nelson took hism inside and rang his mother.
G. “You’ll really red that aming break to help you recover, ” laughed his mother with lelief. “Thank goodness you didn’t paril But ndy did not hear her. He was dreaming once again at the she he would catch tomorrow.”
H. 56. Why did ndy fail to notice the swarm of bees earlier?
I. . He was riding to school.
J. He was listening to a strange sound.
K. He was going fishing with his father.
L. He was lost in the thought of the fishing trip.
[单选题]研究发现，胰岛素必须与细胞膜上的胰岛索受体结合，才能调节血糖平衡。如果人体组织细胞膜缺乏该受体，则可能导致
A. 细胞减缓摄取血糖，血糖水平过高
B. 细胞减缓摄取血糖，血糖水平过低
C. 细胞加速摄取血糖，血糖水平过高
D. 细胞加速摄取血糖，血糖水平过低
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