题干
选词填空。
thank -you special more family favourite
A: Hi, John. Can you tell me ____about American festival?
B: Well, Thanksgiving is my ____festival. We always have a____meal. It’s a big ____dinner. We should say “____” for our food, family and friends.
答案(点此获取答案解析）
more,favourite,special,family,thank-you
2SO3（g），已知起始时c(SO2)="0.4" mol·L-1，c(O2)=1mol·L-1，经测定该反应在该温度下的平衡常数K=19，当SO2转化率为50%时，该反应将( )
