题干

阅读材料,结合所学知识回答问题。

材料一:汉代纺织技术先进,丝织品质量高,绣、罗、纱等许多品种的丝绸,张骞出使西域以后,大量丝帛锦绣沿着通道远销各地,西域各国的珍奇异物也陆续输入中国,这条沟通中西交通的要道,就是著名“丝绸之路”

——摘自人民教育出版社《中国古代史》等

材料二:

材料三:2000多年前,我们的先辈筚路蓝缕,穿越草原沙漠,开辟出联通亚欧非的陆上丝绸之路;我们的先辈扬帆远航,穿越惊涛骇浪,闯荡出连接东西方的海上丝绸之路,古丝绸之路打开了各国友好交往的新窗口,书写了人类发展进步的新篇章。

古丝绸之路绵亘万里,延续千年,积淀了以和平合作、开放包容、互学互鉴、互利互赢为核心的丝路精神,这是人类文明的宝贵遗产。

——***在“一带一路”国际合作高峰论坛开幕式上的演讲《携手推进“一带一路”建设》

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    When kids believe they can achieve success in math and reading, they are more likely to achieve high test scores in those subjects, new research suggests.

    Researchers used one US data set (1,354 American children) and one UK data set (13,901 British children) to measure self-concept and standardized assessments of early and later academic achievement. Self-concept is how students perceive(感知)their abilities to succeed on academic tasks. The data involved youth aged 5 to 18.

    The study considered children's earlier achievement and their characteristics and backgrounds, including birth weight, race, gender, age, and their mother's education.

    The researchers found that children's self-concept of their ability in math predicted later math achievement, while their self-concept of their ability in reading predicted later reading achievement.

    The finding suggests that the links between self-concept of ability and later achievement are specific to areas; that is, there is a link from students' self-concept about reading to reading achievement, and from students' self-concept about math to math achievement.

     “It is not unusual to see standardized measures of achievement predict achievement later in schooling, but it shows that there is more to understand.” says study coauthor Pamela Davis-Kean.

    The research also showed that success was not limited to students who perform at the top levels.

     “It involves in students with different levels of achievement in math and reading,” says Maria Ines Susperreguy, an assistant professor at Pontificia Universidad Catolica de Chile, who led the study. “Even the lowest-performing students who had a more positive view of their math and reading abilities had higher levels of achievement in math and reading.”

    Researchers say they don't know what parents or students did to create these beliefs, but it's an issue they will research further.