2021-2022英语周报高一课标第50答案

4,A【解析】由图可知,过程I中1个水分子中的化学键断裂,过程Ⅱ中另一个水分子中的化学键断裂,过程Ⅲ中形成了新的水分子,故起始时的2个H2O最终都参与了反应,A项正确;过程I、Ⅱ中水分子中的化学键断裂,为吸热过程,B项错误;过程Ⅲ中形成CO2、H2O和H2,H2中的化学键为非极性键,C项错误;催化剂不改变反应的△H,D项错误。

第三节One possible version:Paragraph 1On the Christmas of 1995, a drunken lady said some-thing that amoke him and he realized he had found hisdream girl. That was why the guy did not bother to lookfurther when he realized the girl was not coming backRealizing that he had let away someone so important in hislife. he decided to call her immediately. His whole mindwas flooded with fear. He was afraid that she might havefound someone new or no longer had the same feelings anymore. He tried again and again, never giving up. Finallygot through. He expressed his love for her and thewas moved to tears. She was still waiting for him, nevergiving up.Paragraph 2He decided to y to vancouver to join her. It was thehappiest time of their lizes! But their happy time was short-lived.Two days before he was supposed to fly to Vancou-ver. he received a call from her father. She had a head-oncar collision with a drunken driver. Anyone can imagine theheart-broken feelings he had. Why did fate play such cruelames with him? How he hated himself for taking so long togarealize his mistake I That was in 1996

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