高中英语第四册第一单元单词讲解内容摘要:
in great demand these days. He demanded that the right to vote (should) be given to every adult woman. meet/satisfy one’s demand for sth make demands on/of 对 … 提出要求 ,需要花费 in demand 有需要 ,有需求 freezes at 0176。 C.(zero degrees centigrade) job demands a high degree of skill. agree with you to a certain degree. received a doctor’s degree. degree their friendship grew into love. 度 ,度数 (温度单位 ) 程度 在某种程度上 (大学 )学位 =slowly and gradually 1. He turned off the alarm and sprang out of bed. 2. He sprang his feet when he saw his mother. 3. Tears sprang to her eyes. 4. Play areas for children are springing up all over the place. 5. She rose with a spring. 6. The rubber has lost its spring. 7. The spring of my watch is broken. 8. He was born in the spring of 1944. 9. a mineral spring 猛然跳起 =stood up suddenly 突然出现 /来到 迅速出现 ,突然兴起 ,发条 adj. personally adv eg. personal possessions/experience personal relatio。高中英语第四册第一单元单词讲解
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≠ p+q时,总压力一定(其他条件一定) ( 2) m+n= p+q时,总压力一定(其他条件一定) (平衡) (平衡) 混合气体的平均相对分子质量 Mr ( 1) Mr一定时,只有当 m+n ≠ p+q时平衡 ( 2) Mr一定,但 m+n= p+q时不一定平衡 气体的密度一定时,该反应不一定平衡。 其他条件不变,当体系温度一定时, 该反应平衡。 其他条件不变,当体系内有色物质的颜色 稳定不变时
小时,混和气体颜色先变深是由于① , 后又逐渐变浅是由于 ② ; B:当减压气体体积增大时,混和气体颜色先变浅是由于① , 后又逐渐变深是由于 ②。 NO2浓度增大 NO2浓度减小 平衡向正反应方向移动 平衡向逆反应方向移动 温度对化学平衡的影响 • 演示实验 2NO2(g) N2O4(g)(正反应为放热反应 ) 现象: (红棕色 ) (无色 ) 混和气体受热颜色变深;遇冷颜色变浅。
到新的平衡后, 18O原子将存在于( ) A 只存在于氧气中 B 只存在于氧气和三氧化硫中 C只存在于二氧化硫和三氧化硫中 D 存在于二氧化硫和氧气和三氧化硫中 D 化学平衡移动 原因 :反应条件改变,引起 V正 ≠ V逆 结果 :速率、各组分浓度与原平衡比较均发生变化 方向 V正 V逆 平衡向正反应方向移动 V正 = V逆 平衡不移动 V正 V逆 平衡向逆反应方向移动 二、影响化学平衡的条件
be at home now because the light in his room is still on. 表特别有把握的肯定判断时用 must,表特别有把握的否定判断时用 can, can表判断时只用在否定句中。 因此把 can 改为 must。 42. He need e here before the meeting begins. 作情态动词时 need用在否定,疑问和条件句中
were B. would have e。 had been C. will e。 is D. would e。 was 21. If all places__ alike, there would be little need for geographers. A. being B. are C. be D. were 22. Everything _____ if Albert hadn’t