【简答题】Manners (礼貌) are much more than just saying“Please” and “Thank you”. They are ways of showing kindness. My husband,Bob,is a pilot,and one day we were invited to a potluck (百味餐) at his flying squadron(...
【简答题】In most situations, light helps us see. But when it comes to looking at the night sky, light is actually a kind of pollution. It prs our view of some of life’s most striking sights: stars, planet...