如果用图上距离4cm表示实际距离20km，那么这幅图的比例尺是______．

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答案

20千米=2000000厘米，

4：2000000，

=1：500000；

答：这幅图的比例尺是1：500000．

故答案为：1：500000．

阅读理解

阅读对话，判断正(T)误(F)。

Jenny: What's your favourite colour?

Kim: I like purple.

Li Ming: I like purple, too.

Jenny: You like the same colour. My favourite colour is green.

Danny: I like purple and green. My favourite colour is green, too.

( ) 1. Li Ming and Kim like different colours.

( ) 2. Jenny's favourite colour is green.

( ) 3. Purple is Danny's favourite colour.

( ) 4. Kim's favourite colour is purple.

问答题简答题

基准折现率i0的影响因素有哪些？