这题B为什么不对，答案也有提及。

No.PZ2018062003000181 (选择题)

来源: 品职出题

What is the key driver of trade in Ricardian trade model?

您的回答, 正确答案是: A

A

Technology.

B

不正确The level of labor productivity.

C

Relative amount of labor and capital.

数据统计(全部)

做对次数: 1980

做错次数: 267

正确率: 88.12%

数据统计(个人)

做对次数: 0

做错次数: 1

正确率: 0.00%

解析

A is correct.

In the Ricardian model, differences in technology are the source of comparative advantage and hence the key driver of trade.

考点：Ricardian mode

Ricardian mode认为技术进步以及劳动生产率是比较优势的来源，所以是国际贸易中至关重要的因素。