[解析]
(1)C.词义猜测题。根据原文第一段中"16﹣year﹣old sophomore Andrew Chen knew that things were not going to return to normal as quickly as some of his peers hoped.(16岁的大二学生Andrew Chen 知道事情不会像一些同龄人所希望的那样迅速恢复正常)",由But still表示转折可推断,划线词所在句为:从在日常练习中见到他的朋友到独自在家学习的变化是仍旧是令人震惊的。A.natural"自然 ";B.necessary"必要的";C.disturbing"令人烦扰的";D.reasonable"合理的",故划线词 jarring与C项"令人烦扰的"意思相近。故选C。
(2)B.推理判断题。根据原文第一段"16﹣year﹣old sophomore Andrew Chen knew that things were not going to return to normal as quickly as some of his peers hoped.(16岁的大二学生Andrew Chen 知道事情不会像一些同龄人所希望的那样迅速恢复正常。)"和第二段的" "I only have three years here at South,and it pains me to see one of them being wasted," Chen said.(陈说:我在南方只有三年的时间,其中一年被浪费让我很痛苦)",结合下文"The coronavirus has upended everyone's lives,but for students,the disruption feels particularly acute.(冠状病毒改变了每个人的生活,但对学生来说,这种破坏感觉特别严重。)"可推断,作者描述Andrew Chen 的经历是为了说明冠状病毒如何影响学生的生活。故选B。
(3)C.细节理解题。根据原文第六段的""I saw a lot of younger generations not paying attention," he said. "They were still going out,hanging out with people.I thought that there had to be a way to reach younger folks,who were probably not watching the news("我看到很多年轻一代没有注意到这一点,"他说。"他们仍然出去,和人们一起出去玩。我想得有个办法接触到那些可能没在看新闻的年轻人。")"可知,Harycki想要联系没有意识到这种情况的年轻人。故选C。
(4)A.目的意图题。根据原文倒数第二段"Harycki knows that his peers are worried they can't connect with their friends in the same way,so he created the social distancing pledge to stress that while everyone might be physically distant,they're still connected."可知,Harycki知道他的同龄人担心他们不能以同样的方式与朋友联系,所以他创建了"social distancing pledge" 来强调虽然每个人可能在物理距离上都很遥远,但他们仍然保持联系。由此可知,Haryck创建的目的是说服年轻人待在家里,即使他们和朋友不在一起,也是有联系的。故选A。