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It’s time to do something for your father – the man who for many people has been an encouragement and support since birth. The third Sunday of June is Father’s Day. The holiday honors not only fathers, but also all men who act as father figures, such as stepfathers, uncles and grandfathers. The idea of Father’s Day came from the love and appreciation of American lady called Sonore Smart Dodd in 1909. Dodd wanted a special day to honor her father, William Smart. He rai sed six children by himself on a countryside farm in Washington State after his wife died during the birth of their sixth child. When Dodd became an adult, she realized the selflessness her father has shown in raising his children as a single parent. It was her father who did all for his children. In the eyes of his daughter, William Smart was a courageous, selfless and loving man.[ Dodd’s father was born in June, so she chose to hold the first Father’s Day celebration in Washington on June 19 th , 1910. In 1924, US President Calvin Coolidge supported the idea of a national Father’s Day. Finally, in 1966, President Lyndon Johnson declared the third Sunday of June as Father’s day. So this is a perfect chance to let your father know what he means to you. To show your love and respect, you need not buy an expensive gift. You can send him a home – made card; You can call him every day; Even you can give him a sweet smile when he comes back from work. All these little things are easy for us to so, but they can show your care and love to your father. 小题1:Father’s Day always falls on . A.the same day every year B.the last day of June C.the third Sunday of June D.June 16 th of each year 小题2:Which of the following was NOT used to describe the character of Dodd’s father? A.Loving B.Sellless. C.Humorous. D.Courageous. 小题3:What does the underlined word “raise” in the fourth paragraph mean? A.抬高 B.饲养 C.升起 D.养育 小题4:Who declared the third Sunday of June as Father’s Day? A.President Coolidge. B.President Johnson. C.President Washington. D.President Lincoln. 小题5:What’s the best title for this passage? A.Father’s Day B.Being a Good Father C.Dodd’s Father D.Showing Love to Your Father
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【简答题】甲、乙、丙、丁是常见的化合物,它们有如图所示转化关系(部分物质已略去)。甲是天然气的主要成分;乙是相对分子质量最小的氧化物;丁是大理石的主要成分。则:甲的化学式为 ;①和②的化学方程式分别为 、 。
【单选题】甲烷是天然气的主要成分,下列有关甲烷的说法正确的是:
A.
甲烷是无色、无味,密度比空气小,极难溶于水的气体
B.
甲烷不能使酸性高锰酸钾溶液褪色,所以甲烷不能发生氧化反应
C.
进行甲烷燃烧试验时,不一定检验其纯度
D.
燃烧相同体积的天然气和管道煤气(主要成分是CO、H 2 ),后者消耗氧气多
【单选题】下列说法正确的是 [     ]
A.
乙烯是天然气的主要成分
B.
光化学污染主要是由氮氧化物和碳氢化物引起的
C.
可通过在室内放置一盆水来溶解苯的方法降低新装修房间空气中苯的含量
D.
葡萄糖、淀粉、纤维素都是高分子化合物
【单选题】甲烷是天然气的主要成分。下列表述不正确的是 [     ]
A.
甲烷的分子式与结构简式相同
B.
甲烷的电子式为
C.
甲烷的摩尔体积为22.4 L/mol
D.
常温常压条件下,4g甲烷分子中含有1 mol共价键
【简答题】近几年,天然气逐渐进入宜昌市寻常百姓家,下面是天然气的主要成分甲烷与氧气反应的微观示意图: 通过比较.归纳,我能回答下列问题(不利用相对原子质量): (1)选择上图中的物质,将其化学式对应的物质类别填入下表(填单质或化合物): 化学式 CH 4 O 2 物质类别 (2)一个甲烷分子和一个氧分子的不同点是______; (3)根据上述示意图,从微观角度描述我获得的关于化学变化的一个信息是:_____...
【多选题】保健推拿介质的种类有( )。
A.
水剂类和粉剂类
B.
膏剂类和油剂类
C.
药剂类和酒剂类
D.
方剂类和汁剂类
【判断题】乙烷是天然气的主要成分,在天然气中占绝对多数。
A.
正确
B.
错误
【单选题】甲烷(CH 4 )是天然气的主要成分,甲烷属于
A.
单质
B.
氧化物
C.
有机物
D.
混合物
【单选题】以下主要数据源,哪种方式可以获取最精确的高程和平面数据( )
A.
地形图数字化
B.
卫星影像
C.
野外测量
D.
航空影像
【简答题】(6分)A~G是初中化学常见的七种物质,其中A是常用的建筑材料,C是一种常见的化合物,F是天然气的主要成分,E在这几种物质中相对分子质量最小。 请回答: (1)B的化学式是 ;E的化学式是 。 (2)写出 F→B的化学方程式 ;B→G的化学方程式 。
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