[A语篇解读]　本文为一篇记叙文。作者通过讲述自己和儿子在超市购物时的一次不愉快的经历，教育自己的儿子为人处世要大度。

21．解析：细节理解题。根据第一段中"Suddenly，an old man walked up behind Chase，and stepped before him，bumping Chase out of the way."可知那个老人在插队，故答案为A项。答案：A

22．解析：推理判断题。根据倒数第二段作者对儿子的教诲及最后一段中"A cheerful smile appeared on Chase's face."可知答案为C项。根据倒数第二段中"I was also angry with that man for treating you rudely."可排除A项；根据第二段中"After Chase and I retrieved all the onions，the old man walked away."可排除B、D两项。答案：C

23．解析：推理判断题。那个老人对待作者儿子的方式很粗鲁，可作者在他需要帮助时还是帮助了他，由此可见作者很大度，故答案为B项。答案：B

　　　　　　　　　　　　　　　　B

"Can I hug you？"community nurse Joyce Jebambula asks with a smile as she welcomes me back to her village. "Of course，" I say as I put my arms around her. It's an unbelievable moment. Just at the height of the outbreak more than a year ago，there was an "avoid body contact" rule here. It's now been removed.

One of the most challenging parts of reporting this outbreak over the past 18 months is that I haven't been able to touch anyone in the worst