中国方面迄今的报复措施是对大约200亿美元商品加征平均12.5%的关税，使美国在双边贸易中的份额达到29.7%。虽然加征的关税规模本身并不显著，但低于30%的占比意味着激发了美方的报复动机。

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

近日，北京大学心理与认知科学学院、麦戈文脑科学研究所的易莉课题组在《Autism Research》发表了题为“Activation of Thematic and Taxonomic Relations During Lexical-Semantic Processing in Autistic Children: Evidence From Eye ...