[解析]
(1)A.主旨大意题。根据第一段While English is getting more important in our schools,Chinese has become popular among foreign kids.虽然英语在我们的学校变得越来越重要,但汉语在外国孩子中已经很流行。第三段Chinese isn't just popular in South Korea.People from all the world want to learn it.汉语不仅在韩国很受欢迎。全世界的人都想学汉语。及第四段In America,Chinese is the second most popular foreign language after Spanish.在美国,汉语是仅次于西班牙语的第二大外语。可知,文章主要讲的是汉语在国外变得越来越受欢迎。故选A。
(2)C.细节理解题。根据第三段Piao is from South Korea.可知,他来自于韩国。故选C。
(3)D.细节理解题。根据第四段Students learn to make jiaozi and tie Chinese knots(中国结).Some even try to write and draw in Chinese way!学生们学习做饺子和打中国结。一些学生甚至尝试用汉语书写和绘画!可知,一些美国中学生除了唱中文歌曲外,还学会做饺子,打中国结,尝试用汉语书写和绘画。故选D。
(4)D.推理判断题。由文中倒数第三段的"People want to learn Chinese because China is becoming such an important country.人们想学汉语是因为中国正在成为一个如此重要的国家。"可知,因为中国在世界上变得越来越重要。故选D。