问题 填空题

现有氧化钙、硝酸钾、氯化钠和碳酸钙四种常见的物质,请用它们相应的化学式填空.

(1)常用作干燥剂的是______;        (2)可用作食品调味剂的是______;

(3)农业上可用作复合肥料的是______;(4)可用来制取二氧化碳的是______.

答案

(1)氧化钙具有吸水性,可用作干燥剂,所以本题答案为:CaO;

(2)氯化钠具有咸味,常用作调味品,所以本题答案为:NaCl;

(3)硝酸钾含有氮元素和钾元素,属于复合肥料,所以本题答案为:KNO3

(4)碳酸钙是制取二氧化碳的主要物质,所以本题答案为:CaCO3

阅读理解

Material Girl no more? Madonna says writing children’s books is more satisfying than being a movie star.

Her book, The English Roses, wen t on sale on September 15th, appearing in 100 countries and in 30 languages as the first in her series of tales for children. The pop diva (女歌唱家), whose only book until now was the 1992 photo essay titled “Sex”, said she wrote the books to teach children some of the life lessons she’s learned over the years.

“The most fun that I’ve had of all the things I’ve done successfully has been to write these books. A lot of it has to do with the fact that I’m not doing it to become more famous, and I’m not doing it to become richer. I’m doing it because I want to share something I know with children.”

Hours after its release, the 43page book was already No. 3 on Amazon, com’s sales list. The first print is 1 million copies worldwide, with more than 750,000 in the United States. The English Roses is about a friendship shared by four girls and their mutual (共同的) envy of a beautiful classmate, with illustrations (插图) by fashion artist Jeffrey Fulvimari.

“There is one lifegiving force in the world,” Madonna declared. “When we disconnect from this lifegiving force, that’s when we bring pain and suffering into our lives. Each of the stories has to do with different ways you disconnect from God. ”Madonna also said she was deeply affected by the experience of raising two children, Lourdes, 6, and Rocco, 3. The English Roses is the latest among a growing number of celebritywritten children’s books.

The next book in the series, “Mr Peabody’s Apples,”will be out in November.Each tale is set in a different time and  place and has new characters and different illustrators.

1.How many books does Madonna’s series of tales include?

A.At least 3.             B.4.             C.At least 2.               D.6.

2.According to the idea of Madonna, the underlined phrase “life-giving force”in Paragraph 5 refers to       .

A.The English Roses.      B.God            C.Mr Peabody’s Apples.   D.her life

3.When Madonna said writing children’s books was more satisfying than being a movie star,she meant that        .

A.she was more satisfied with her writing children’s books

B.she was more satisfied as a movie star       C.being a movie star was not really successful

D.she was not a Material Girl any more

4.According to the passage,Madonna wrote the book The English Roses in order to        .

A.provide children with fun                      B.teach children some life lessons

C.teach children how to become famous             D.share her success with children

单项选择题