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【简答题】
Look into the mirror and what do you see? You see yourself. But when you move. you do everything backward(相反地)in the mirror! If you wave your left hand, your right hand waves in the mirror. If you wink your right eye, your left eye, your left eye winks(眨). Try to read a page in the mirror .The words will be backwards. What is really happening? You do not see through the glass of a mirror as you do through a window. The glass of a mirror has a silver coating on the back. The light from the sun or a bulb bounces (弹回)off you ,goes into the mirror ,and bounces straight back out to you again. Mirrors have been used for thousands of years. The earliest were round pieces of shiny metal. Glass mirrors came late. The ancients thought that a mirror was magic. They did not understand how it worked. They thought they saw their spirits in a mirror and breaking a mirror brought bad luck. Today mirrors have many uses .For example, they can make rooms look bigger and prettier. They also show us if our hair is combed(梳理) well and our faces are clean. On cars, buses and trucks, mirrors help drivers see traffic behind them. Mirrors are also used in telescopes(望远镜)and searchlights(探照灯). Fun houses use mirrors. They make people look funny. Some mirrors are curved to make people seem short and round or tall and tin They make people laugh at themselves. 小题1:If you wave your right hand, you can see your In the mirror. A.left hand down B.left hand wave C.right hand wave D.right hand up 小题2:Mirrors . A.appeared a long time ago B.were made of glass at first C.made of metal are popular today D.had many uses in ancient times 小题3:Mirrors were magic in the past because . A.people thought they could see their spirits in mirrors B.they were used in magic shows C.they could make people change their heights and weights D.they could make people laugh 小题4:What does the word “curved” mean in Chinese? A.雕刻 B.油漆 C.扭转 D.弯曲
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【单选题】1巴金先生( )给后人的宝贵遗产,不仅有他的皇皇巨著,还有他的磊落人格和高洁风骨。 2青年人应当( )风发,积极有为。 3他们学习了《中国教育改革和发展纲要》,决心统筹安排,因地制宜,( )推进农村教育综合改革。
A.
留传  意气  逐步
B.
流传  意气  逐渐
C.
流传  义气  逐步
D.
留传  义气  逐渐
【简答题】一定温度下2 L的恒容容器甲中,加入2 mol碳和2 mol CO 2 发生如下反应: C(s)+CO 2 (g) 2CO(g) ΔH>0,测得容器中CO 2 的物质的量随时间t的变化关系如图所示。 (1)该反应的ΔS____0(填“>”、“(2)列式并计算上述温度下此反应的平衡常数____ (结果保留一位小数)。 (3)向上述平衡体系中再通入CO 2 ,则CO 2 的转化率____(填“增大”、...
【单选题】吸热反应 C(s)+H 2 O(g) = = = CO(g)+H 2 (g) 在一定温度下达平衡后
A.
各物质的平衡分压相等
B.
减小生成物的分压将使标准平衡常数减小,促使平衡向正反应方向进行
C.
升高温度将使标准平衡常数增大,促使平衡向正反应方向进行
D.
由于反应前后分子数目相等,所以增大总压力对平衡无影响
【简答题】熟练掌握有理函数的不定积分问题(特别是部分分式分解),以及可化为有理函数的不定积分问题。
【单选题】下图的方尖碑是哪一个国家的艺术作品
A.
两河流域
B.
埃及
C.
希腊
D.
罗马
【判断题】羊舍要求光线充足。
A.
正确
B.
错误
【简答题】在一定温度下,可逆反应C(s) + CO2(g) == 2CO(g)的KΘ= 2.0;当CO2(g)与CO(g)的分压皆为100kPa时,则该反应在同样温度时自发进行的方向为
【简答题】一定温度下2L的恒容容器甲中,加入2moL碳和2moLCO 2 发生如下反应: C(s)+CO 2 (g) 2CO(g) △H>0 测得容器中CO 2 的物质的量随时间t的变化关系如图所示。 (1)该反应的ΔS____0(填“>”、“<”或“=”)。在____(填“较高”或“较低”)  温度下有利于该反应自发进行。 (2)列式并计算上述温度下此反应的平衡常数K____。(结果保留一位小数) (3)...
【判断题】药物与血浆蛋白结合率越低,则药物发挥作用快,作用持续时间长。
A.
正确
B.
错误
【简答题】...the King’s English slips and slides in conversation. (P18)
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