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(本题共11分)用劣质的材料装修房屋,会造成甲醛(化学式为HCHO)超标。环境中

题型:填空题

题目:

(本题共11分)用劣质的材料装修房屋,会造成甲醛(化学式为HCHO)超标。环境中甲醛超过国家规定的标准,则对人体健康有危害。

(1)甲醛是由_______种元素组成的有机物;甲醛中,碳原子个数∶氢原子个数=______,碳元素的质量分数是______。

(2)房屋装修过程中,下列方法有利于降低甲醛污染的是______。

A. 用合格装修材料                          B. 保持室内通风良好         C. 向室内喷香水

(3)甲醛是有机物,写出白酒中一种有机物的名称______和化学式_____。

(4)唐幸福等人最近成功研制出一种单原子银催化剂,让甲醛跟氧气反应生成二氧化碳和水。试写出该反应的化学方程式_______________________。

答案:

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题型:填空题

Part 1


·Read the.following passages, eight sentences have been removed from the article.
·Choose from the sentences A-H the one whichfits each gap.
·For each gap (1-8) mark one letter (A-H) on the Answer Sheet.
·Do not mark any letter twice.
In the world of entertainment, TV talk shows have undoubtedly flooded every inch of space on daytime television. (1) But no two shows are more profoundly opposite in content, while at the same time standing out above the rest, than the Jerry Springer and the Oprah Winfrey show.
Jerry Springer could easily be considered the king of"trash talk". (2) For example, the show takes the ever-common talk show themes of love, sex, cheating, guilt, hate, conflict and morality to a different level. (3)
Like Jerry Springer, Oprah Winfrey takes TV talk show to its extreme, but Oprah goes in the opposite direction. (4) Topics range from teaching your children responsibility, managing your workweek, to getting to know your neighbors.
Compared with Oprah, the Jerry Springer show looks like poisonous waste being dumped on society. Jerry ends ever with a "final word". (5) Hopefully, this is the part where most people will learn something very valuable.
Clean as it is, the Oprah show is not for everyone. (6) Most of these people have the time, money, and stability to deal with life’s tougher problems. Jerry Springer, on the other hand, has more of an association with the young adults of society. (7) They are the ones who see some value and lessons to be learned underneath the show’s exploitation.
While the two shows are as different as night and day, both have ruled the talk show circuit for many years now. (8) Ironically, both could also be considered pioneers in the talk show world.
  • A. He makes a small speech that sums up the entire moral of the show.
  • B. The show focuses on the improvement of society and an individual’s quality of life.
  • C. The show’s main target audience are middle-class Americans.
  • D. Each one caters to a different audience while both have a p following from large groups of fans.
  • E. The topics on his show are as shocking as shocking can be.
  • F. These are 18-to 20-year-olds whose main troubles in life involve love relationship, sex, money and peers.
  • G. And anyone who watches them regularly knows that each one varies in style and format.
  • H. Clearly, the Jerry Springer show is a display and exploitation of society’s moral catastrophe, yet people are willing to eat up the intriguing predicaments of other people’s lives.

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