问题 解答题

有三块长方形菜地,已知这三个长方形的长相同,第二块比第一块的宽多3米,第三块比第一块的宽少4米,第二块面积是840平方米,第三块面积是630平方米,求第一块地的面积是多少平方米?

答案

第二块比第三块多出的面积数:840-630=210(平方米),

第二块比第三块宽的米数:3+4=7(米),

每一块菜地的长:210÷7=30(米),

第三块菜地的宽:840÷30=28(米),

第一块菜地的宽:28-3=25(米),

第一块菜地的面积:25×30=750(平方米)

答:第一块地的面积是750平方米.

单项选择题

Like many of my generation, I have a weakness for hero worship. At some point, however, we all to question our heroes and our need for them. This leads us to ask: What is a hero

Despite immense differences in cultures, heroes around the world generally share a number of characteristics that instruct and inspire people.

A hero does something worth talking about. A hero has a story of adventure to tell and community who will listen. But a hero goes beyond mere fame.

Heroes serve powers or principles larger than themselves. Like high-voltage transformers, heroes take the energy of higher powers and step it down so that it can be used by ordinary people.

The hero lives a life worthy of imitation. Those who imitate a genuine hero experience life with new depth, enthusiasm, and meaning. A sure test for would-be heroes is what or whom do they serve What are they willing to live and die for The answer or evidence suggests they serve only their own fame, they may be famous persons but not heroes. Madonna and Michael Jackson are famous, but who would claim that their fans find life more abundant

Heroes are catalysts (催化剂) for change. They have a vision from the mountaintop. They have the skill and the charm to move the masses. They create new possibilities. Without Gandhi, India might still be part of the British Empire. Without Rosa Parks and Martin Luther King, Jr., we might still have segregated (隔离的) buses, restaurants, and parks. It may be possible for largescale change to occur without leaders with magnetic personalities, but the pace of change would be slow, the vision uncertain, and the committee meetings endless.

Although heroes may come from different cultures, they ().

A. generally possess certain inspiring characteristics

B. probably share some weaknesses of ordinary people

C. are often influenced by previous generations

D. all unknowingly attract a large number of fans

单项选择题