1.科學家最近又發(fā)現(xiàn)了一種新能源--“可燃冰”它的主要成分是甲烷與水分子的結(jié)晶水合物(CH4·nH20)。其形成:埋于海底地層深處的大量有機質(zhì)在缺氧環(huán)境中,厭氧性細菌把有機質(zhì)分解,最后形成石油和天然氣(石油氣),其中許多天然氣被包進水分子中,在海底的低溫與高壓下形成了類似冰的透明晶體,這就是“可燃冰”。又知甲烷同CO2一樣也是溫室氣體。這種可燃冰的晶體類型是 ( )
A.離子晶體 B.分子晶體
C.原子晶體 D.金屬晶體
1.有A、B、C、D、E、F六種有機化合物,存在下圖所示轉(zhuǎn)化關系:
已知:A屬于烴,且相對分子質(zhì)量不超過30;在加熱條件下,B可與氫氧化鈉溶液反應,向反應后所得混合液中加入過量的硝酸,再加入硝酸銀溶液,生成淡黃色沉淀。請寫出A-F六種物質(zhì)的結(jié)構(gòu)簡式。
5.某烴的衍生物(一元飽和)A是中性液體,它能與金屬鈉反應放出氫氣,可以肯定A中有 基存在,在銅作催化劑的條件下,A能被氧化成B,B與新制的氫氧化銅加熱到沸騰,生成C和紅色沉淀D。由此可以證明B分子中含有 基。1體積的B蒸氣完全燃燒需要其4倍體積的氧氣(相同條件),則B是 ,C是 ,D是 。
4.有機物C6H12O2能發(fā)生水解反應生成A和B,B能氧化生成C。
(1)如果A、C都能發(fā)生銀鏡反應,則C6H12O2可能的結(jié)構(gòu)簡式為:
(2)如果A能發(fā)生銀鏡反應,C不能,則C6H12O2可能的結(jié)構(gòu)簡式為:
(3)如果A不能發(fā)生銀鏡反應,C氧化可得A,則C6H12O2可能的結(jié)構(gòu)簡式為:
3.有A、B、C、D四種有機物,它們相互轉(zhuǎn)化關系如右圖所示。室溫下,B為一種中性氣體,B和D的分子有相同的最簡式,D的蒸氣對B的相對密度是2,且B、C、D都能發(fā)生銀鏡反應。則A、B、C、D的結(jié)構(gòu)簡式分別是:
A ,B ,C ,D 。
2.請以乙醇為原料設計合成的方案。寫出合成方案中所涉及反應的化學方程式。
1.有A、B、C、D、E、F六種有機化合物,存在下圖所示轉(zhuǎn)化關系:
已知:A屬于烴,且相對分子質(zhì)量不超過30;在加熱條件下,B可與氫氧化鈉溶液反應,向反應后所得混合液中加入過量的硝酸,再加入硝酸銀溶液,生成淡黃色沉淀。請寫出A-F六種物質(zhì)的結(jié)構(gòu)簡式。
A、 B、 C、
D、 E、 F、
第三節(jié):書面表達(滿分30分)
假如你叫李華,參加學校開展的“有困難向誰求助”(Who do you turn to when in trouble?)的調(diào)查活動,調(diào)查結(jié)果如下表。請用英語給報社編輯寫一封信,反映以下內(nèi)容。
求助對象 |
比例 |
理 由 |
同學、朋友 |
58% |
年齡相仿,容易理解與交流 |
老師、家長 |
30% |
有愛心、有經(jīng)驗、可以信任 |
無 |
12% |
不愿與人交流,難以與人溝通 |
注意:1.內(nèi)容要點全面,并表達出你的觀點。為了使文章連貫,可適當增加內(nèi)容。
2.詞數(shù):100詞左右(不包括所給句子)。
Dear editor,
I’m a student in Senior Three. We have made a survey-“Who do you turn to when in trouble?” Here are the results.
Sincerely yours.
Li Hua
第二節(jié):短文改錯(共15小題;每小題1.5分,滿分15分)
此題要求改正所給短文中的錯誤。對標有題號的每一行作出判斷:如無錯誤,在該行右邊橫線畫一個勾(√);如有錯誤(每行只有一個錯誤),則按下列情況改正:
該行多一個詞:把多余的詞用斜線( \ )劃掉,在該行右邊橫線上寫出該詞,并也用斜線劃掉。
該行缺一個詞:在缺詞處加一個漏字符號(∧),在該行右邊橫線上寫出該加的詞。
該行錯一個詞:在錯的詞下畫一橫線,在該行右邊橫線上寫出改正后的詞。
注意:原行沒有錯的不要改。
In my school six students punished for cheating in the mid-terms, but 76.
this didn't stop some students from doing the same thing. In one day's 77.
exams, on my way to home I heard some students talking with each other. "I 78 .
was too worried that I sent a message to everyone I know to ask the answers 79 .
of the questions on the politics exam paper." It's clear that many students 80.
cheated. This six unlucky students became the "killed chickens", but the 81 .
"monkeys" were not frightened at all. More and more students start cheating 82 .
in school exams. That must be how so many students do well in the exams 83.
at their own school, and fail in the college entrance examinations. I do hope 84.
that useful measures could be taken stop cheating in exams. 85.
第一節(jié):單詞拼寫(共10小題;每小題1分,滿分10分)
根據(jù)下列句子所給漢語注釋,在句子右邊的橫線上寫出空缺處各單詞的正確形式。
66. Going ____________ (國外) means going to work or live in a foreign country.
67. He went by, _______________ (假裝) not to see us.
68. You must have __________(忘記) to take your English textbook.
69. There are many ______________(旅客)who are waiting for the train at the station.
70. John has three sisters. Mary is the ___________ (聰明) of the three.
71. The eleventh month of the year is _______________ (十一月)
72. The sidewalk was so __________(狹窄的) that we had to walk in single file.
73. In the past women had to make a __________(選擇) between a career and marriage.
74. China developed close relationship with many _______(亞洲) countries centuries ago.
75. Dry wood burns _____________ (容易).
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