Question

which best describes how dengs move to work with international experts on matters of science and technology was a major departure from previous government policy in china?
china had had a policy of self - reliance.
china had refused to embrace modern technology.
china had established local teams of experts.
china had been closed to most foreigners.

Explanation:

Before Deng Xiaoping's policy shift, China had a policy of self - reliance. Working with international experts was a departure from this as it involved external cooperation. The option "China had refused to embrace modern technology" is incorrect as China did have some efforts in technology before. "China had established local teams of experts" does not contrast with working with international ones. "China had been closed to most foreigners" is too broad and not the most relevant contrast to the policy of working with international experts on science and technology.

Answer:

China had had a policy of self - reliance.