题目

Kalong Community Centre provides enrichment activities at reasonable rates. This December holiday, Katong CC has packed a complete and dynamic series of holiday activities for kids. From discovery science, street magic to speech & drama camps, we have it all!  Bring out the natural creativity in your child. We have Baking Workshop (5 years & up) on 17 August 2010. Get professional advice from a certified image consultant@ Kids’ Dining Etiquette course (6-14 years) on 3 August 2010. Now you can bring your kids to your wedding anniversary dinner without worrying about them m虽然人类早就利用发酵技术酿造酒，但直到近代才认识到发酵现象是由（　　）A．湿润的空气引起的B．微生物引起的C．细菌引起的D．真菌引起的