IB经济真题答案分享 精准拆解每个小问

IB经济HL阶段比SL难度上升了不少，因此更需要扎实的练习来巩固知识。本文就来分享一道大题的IB经济真题答案和解析，教你如何拆解每个小问，争取把分数都拿到。

IB经济考试基本档案

在看具体的IB经济真题答案前，我们先来了解一下经济这门课。

IB经济学的题型结构并不复杂，主要为选择题与简答题。选择题共三十道，每道四个选项。简答题会给你几段短文，让你在阅读后回答以下的小题，其中常见的小题为：“Define the term ‘x’ indicated in bold in the text.”即给文中名词下定义，考考生的记忆能力。

其他小题如：“Using information from the text/data and your knowledge of economics, evaluate the possible consequences for the Brazilian economy of the fall in the value of the Brazilian real.” 则偏向于利用经济学知识进行分析思考，考考生的思维能力。

IB经济想拿高分，必须建立在广泛的阅读和积极的课堂参与的基础上。通过阅读掌握扎实的理论基础，而后课堂上的讨论、辩论和练习可以进一步加深对基本知识的理解，形成坚实的推理基础。

IB经济真题答案与解析

A firm making handmade shoes is concerned with its productive efficiency.
The management has looked at the production levels using different quantities of labour and the product and cost data are set out in the table below.

(a) Outline the difference between fixed and variable costs of production.

(b) (i) Using the data in the table below, determine the marginal product for the different quantities of labour employed and complete the marginal product column in the table.

(ii) Using the data in the table in part (b)(i), draw a graph to show the relationship between marginal product and labour input. The axes and curve must be labelled.

(iii) On the graph above identify the point where diminishing returns set in.

(c) (i) State the equation used to calculate

(ii) Using the data in the table, determine the marginal cost and average total cost figures for the different quantities of total product and complete the marginal cost and average total cost columns in the table.

(iii) Using the data in the table in part (c)(ii), draw a graph to show the firm’s average total cost curve. The axes and curve must be labelled.

(iv) Define the term productive efficiency.

(d) Explain how the law of diminishing returns affects this firm’s marginal costs.

(e) Explain one possible source of economies of scale that this firm might benefit from if it increases its scale of production.

IB经济真题答案解析

(a) Variable costs change with output, while fixed costs stay the same despite of the output.

(b) (i)

(ii)

(iii)

(c)

(i) ATC = TC / Q

MC = change in TC / change in Q

(ii)

(iii)

(iv) Productive efficiency refers to when a firm produces at the lowestunit of average total cost.

(e) In the case of bulk buying of inputs a lower price may be secured, so the cost per unit of output falls.

本日IB经济真题答案就分享到这里。面对这门国际课程，如果基础知识不牢固，对经济学基本术语和概念没有一个清晰的认识，那么答案便会没有分量，更不用谈冲7了。要是想让自己学得更扎实，可以点击预约试听【IB同步培训班】——

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更多IB学习攻略点击

ib经济和商务选哪个？经济更适合理科好的学员

IB考试难吗？2021年各科目出分复盘为你解析   

2021年IB TOK论文放题，哪道最好拿A？唯寻解析来了

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