问题 问答题

如图所示试剂瓶中分别盛有四种常见的化学约品.

(1)C瓶中药品的化学式为______.D瓶中药品的名称是______,它在生活种的一种用途是______.

(2)利用如图所示的药品,按下列要求写出反应的化学方程式.

①实验室制取氧气:______

②选用一种药品与盐酸反应:______.

答案

(1)C瓶中药品碳酸钙的化学式为 CaCO3,D瓶中药品NaCl的名称是氯化钠即食盐,在生活作调味品,

故选CaCO3;氯化钠;作调味品;

(2)①实验室制取氧气的方法有:方法一氯酸钾在二氧化锰催化作用下,加热分解为氯化钾和氧气,方法二高锰酸钾在加热的条件下,分解为锰酸钾、二氧化锰和氧气,根据现有的药品高锰酸钾,方程式为2KMnO4

  △  
.
 
K2MnO4+MnO2+O2↑,

故答案为:2KMnO4

  △  
.
 
K2MnO4+MnO2+O2↑;

②用碳酸钙与盐酸反应方程式为:CaCO3+2HCI═CaCl2+H2O+CO2↑,

故选CaCO3+2HCI═CaCl2+H2O+CO2↑.

阅读理解

C

There is a place where Christmas lives all year long. It is called Bronner’s Christmas Wonderland in Frankenmuth, Michigan. The family-owned business calls itself the world’s largest Christmas store. The late Wally Bronner started the business in 1945.

Wayne Bronner, Wally’s son, is president and CEO of what is now a multi-million dollar corporation. He learned the business from an early age. Some of his best memories are traveling to other countries with his father to find new products for the store.

Bronner’s sells more than fifty thousand holiday products from seventy nations. Half of the products cost less than ten dollars. Wayne Bronner says demand for small objects to hang on Christmas trees has expanded over the years. People spend more time, effort and money into decorating their homes with these ornaments(装饰品), lights and religious scenes. Bronner’s is famous for its nativity scenes which show the birth of Jesus Christ.

Michigan has the nation’s highest unemployment rate. Bronner’s has been affected by the financial crisis, too. But not in reduced sales.

Wayne Bronner said, “Even though people are spending less, we’re having more people visit here. And as a result we’ve actually had a sales increase.” Bronner’s success is also linked to community co-operation and investment. Frankenmuth is a town of five thousand people in eastern Michigan’s farm country. The town was settled by Bavarian Germans in the 1800s. It has kept its traditions alive in buildings and restaurants.

Bavarian cultural themes and Bronner’s huge store bring three million visitors a year. The town is the most popular place for tourists in the state. Bronner’s business is aimed at a single day of the year. But that is not too different from other businesses.

“About half of our business is done in the last quarter of the year, in the last three months. And actually when you compare that with most retailers(零售商), that follows the same pattern.” Wayne Bronner says the family’s long-term planning and willingness to reinvest profits has grown the company into what it is today. Still, it does not hurt to build a business on a holiday which is celebrated worldwide. Currently, about only two percent of sales are overseas. But Wayne Bronner sees room for growth, especially through the Internet.

51. Bronner’s Christmas Wonderland is probably ______.

A. a private business            B. a state-run business

C. the world’s largest store       D. a nationalized corporation

52. Bronner’s mainly sells ______.

A. festival ornaments made by themselves

B. holiday products imported from foreign countries

C. festival ornaments during the summer and winter holidays

D. holiday products to tourists from foreign countries

53. We can learn from the passage that ________.

  A. most of Bronner’s products are expensive

B. people are spending less money on small objects

C. Frankenmuth is a modern town popular with tourists

D. Wally Bronner, founder of Bronner’s, has passed away

54. In what way has the financial crisis affected Bronner’s Christmas Wonderland?

A. Many of its staff have lost their jobs.

B. Only two percent of sales are overseas.

C. The corporation has had an increased sale.

D. People are spending less in Bronner’s.

55. Bronner’s success lies in the following EXCEPT ________.

A. aiming its business at a single day of the year

B. community co-operation and investment

C. the family’s long-term planning

D. the willingness to reinvest profits

单项选择题