题目

阅读理解Before she could even talk, Ellie Heathspent hours drawing pictures every day. When she grew older, the 15-year-oldgirl discovered the joy of sewing(缝纫). She said that she found it calming. She started out to make smallthings, like jewelry and soft toys. Over times, she began making clothing. Herlove of the creative work led her to pen a business. Three Blue bunnies is thename of her company, which makes what she calls wearable art.My definition of wearable art issomething that makes you feel unique. It's one of a kind, and oftenhandmade.All the pieces Ellie created were madeof有氮气、一氧化碳和二氧化碳的混合气体40g，其中碳元素的质量分数为30%。使该混合气体通过足量的灼热氧化铜充分反应后。再将气体通入过量的石灰水中，能得到白色沉淀的质量为A.30g B.50g C.100g D.150g