问题 阅读理解

In 1939 two brothers, Mac and Dick McDonald, started a drive-in restaurant in San Bernadino, California. They carefully chose a busy corner for their location. They had run their own businesses for years, first a theater, then a barbecue(烤肉) restaurant, then another drive-in. But in their new operation, they offered a new, shortened menu: French fries, hamburgers, and sodas. To this small selection they added one new idea: quick service, no waiters or waitresses, and no tips.

Their hamburgers sold for fifteen cents. Cheese was another four cents. Their French fries and hamburgers had a remarkable uniformity(一致性), for the brothers had developed a strict routine(程序) for the preparation of their food, and they insisted on their cooks’ sticking to their routine. Their new drive-in became surprisingly popular, particularly for lunch. People drove up by the hundreds during the busy noontime. The self-service restaurant was so popular that the brothers had allowed ten copies of their restaurant to be opened. They were content with this modest success until they met Ray Kroc.

Kroc was a salesman who met the McDonald brothers in 1954, when he was selling milkshake-mixing machines. He quickly saw the special attraction of the brothers’ fast-food restaurants and bought the right to franchise(特许经营) other copies of their restaurants. The agreement included the right to duplicate(复制) the menu, the equipment, even their red and white buildings with the golden arches(拱门).

Today McDonald’s is really a household name. In 1976, McDonald’s had over $ l billion in total sales. Its first twenty-two years is one of the most surprising success stories in modern American business history.

小题1: This passage mainly talks about _______.

A.the development of fast food services

B.how McDonald’s became a billion-dollar business

C.the business careers of Mac and Dick McDonald

D.Ray Kroc’s business talent小题2:Mac and Dick managed all of the following businesses except _______.

A.a drive-in

B.a theater

C.a cinema

D.a barbecue restaurant小题3: We may infer from this passage that _______.

A.Mac and Dick McDonald never became wealthy for they sold their idea to Kroc.

B.the place the McDonalds chose was the only source of the great popularity of their drive-in

C.forty years ago there were lots of fast-food restaurants

D.Ray Kroc was a good businessman小题4:The passage suggests that _______.

A.creativity is an important element of business success

B.Ray Kroc was the close partner of the McDonald brothers

C.Mac and Dick McDonald became broken after they sold their ideas to Ray Kroc

D.California is the best place to go into business

答案

小题1:B

小题2:C

小题3:D

小题4:A

“麦当劳”是家喻户晓的世界著名快餐饮食品牌。本文介绍了Mac and Dick McDonald两兄弟最初创业及 Kroc 购买该品牌经营权, 复制和发展“麦当劳”的一些情况。

小题1:主旨题。通读全文可知本文主要介绍 Mac and Dick McDonald 两兄弟的最初创业及 Kroc 购买该品牌经营权的情况,由此可知答案为 B。

小题2:细节题。根据第 1 段第 3 句话 They had run their own businesses for years, first a theater, then a barbecue(烤肉) restaurant, then another drive-in可知答案为 C。

小题3:判断题。根据第 3 段第 2 句 He quickly saw the special attraction of the brothers’ fast-food restaurants and bought the right to franchise(特许经营) other copies of their restaurants.可以做出正确判断。

小题4:主旨题。从全文可得出结论:创造力是事业成功的重要因素。

实验题

(9分)实验室常利用甲醛法测定(NH4)2SO4样品中氮的质量分数,其反应原理为:4NH+6HCHO===3H+6H2O+(CH2)6N4H[滴定时,1 mol(CH2)6N4H与1 mol H相当],然后用NaOH标准溶液滴定反应生成的酸.某兴趣小组用甲醛法进行了如下实验:

步骤Ⅰ 称取样品1.500 g.

步骤Ⅱ 将样品溶解后,完全转移到250 mL容量瓶中,定容,充分摇匀。

步骤Ⅲ 移取25.00 mL样品溶液于250 mL锥形瓶中,加入10 mL 20%的中性甲醛溶液,摇匀、静置5 min后,加入1~2滴酚酞试液,用NaOH标准溶液滴定至终点。按上述操作方法再重复2次。

(1)根据步骤Ⅲ填空:

①若碱式滴定管用蒸馏水洗涤后,直接加入NaOH标准溶液进行滴定,则测得样品中氮的质量分数________(填“偏高”、“偏低”或“无影响”)。

②若锥形瓶用蒸馏水洗涤后,水未倒尽,则测得样品中氮的质量分数________(填“偏高”、“偏低”或“无影响”)。

③若滴定前,碱式滴定管尖嘴处有气泡,而在滴定后气泡消失,则测得样品中氮的质量分数________ (填“偏高”、“偏低”或“无影响”)。

④若滴定前以仰视的姿势读取了碱式滴定管的读数,滴定后读数正确,则测得样品中氮的质量分数________ (填“偏高”、“偏低”或“无影响”)。

⑤滴定时边滴边摇动锥形瓶,眼睛应观察______。

A.滴定管内液面的变化

B.锥形瓶内溶液颜色的变化

⑥滴定达到终点时,酚酞指示剂由______色变成________色。

(2)滴定结果如下表所示:

滴定次数待测溶液的体积/mL标准溶液的体积
滴定前刻度/mL滴定后刻度/mL
125.001.0221.03
225.002.0021.99
325.000.2020.20
若NaOH标准溶液的浓度为0.10 mol/L,则该样品中氮的质量分数为________。

单项选择题