问题 单项选择题

风险型决策是指可能出现的自然状态和各种自然状态发生的概率是( )。

A.随机的
B.不确定的
C.已知的
D.无法预测的

答案

参考答案:C

解析:只可能出现一种确定状态的决策为确定性决策。如对一个待决策的问题,决策者不能肯定未来出现哪种自然状态的概率,也不能肯定每种自然状态出现的概率,此种决策为不确定性决策

阅读理解

阅读理解。

     Canberra is the capital of Australia. It is a modern and lively city with a population of over 345.000. 

                                                                     History

     Canberra is the eighth largest city in Australia. It is 238 km from Sydney and 507 km from Melbourne

was once the capital of Austualia. Sydney people also wished to make their city the capital. It was difficult

for the government to make the decision. Then in 1911, the government chose a place to build the new

capital. It was between Sydney and Melbourne, the two largest cities. In 1927, the city was set up. It became

the capital and was named Canberra. "Canberra" means "a place for friends to get together."

                                                                      Cuture

     Canberra is a beautiful city with trees and flowers everywhere. There's a Flower Festival in September

each year. People can enjoy all kinds of beautiful flowers and welcome the spring to arrive. A man-made

like-lake. Bertey Griffin is in the center of the city. It's about 25 km long. People like to ride bikes, walk or

run around the lake. In Canberra, there're many famous universities like the Australian National University

and the University of Canberra. The National Library and the National Meseum of Australia are also famous

places that people like to visit.

1. How far is Canberra from Sydney?

A. 25km

B. 238km

C. 345 km

D. 507 km

2. The word "Canberra"means _____.

A. the largest city

B. a beautiful man-made lake

C. the old capital city

D. a place for friends to get together

3. Canberra Flower Festival is a festival _____.

A. ride lakes

B. visit Universities

C. welcome the spring

D. walk around the lake

选择题