题目

—Are you going to Australia for the coming winter holiday? —Yes. I am making the bookings. It is exciting to think about that I ____a sun-bath on the beach soon. A . am enjoying B . will be enjoying C . have enjoyed D . will have enjoyed 答案：B国家质监局发布公告：禁止生产或进口有害的DEHA（C22H42O4）增塑剂的PVC食品保鲜膜．市场上保鲜膜的种类较多，要保证食品安全，必须注意识别．（1）DEHA由 种元素组成，分子中C、H原子个数比为 ．（2）塑料保鲜膜不宜包装热的油炸食品，因为高温时保鲜膜中增塑剂分子更容易从保鲜膜进入食品中．从微观角度解释其原因是 ．