题目

 The professor has received the letter ____ to give a lecture in frication Institute. A. being invited   B. to be invited  C. inviting him   D. invited 答案：C 解析:   该题考查分词短语的用法。the letter与invite之间存在主谓关系，故要用现在分词作后置定语。感受身边的物理﹣﹣质量为1.5kg的物体最可能的是（　　）A．一个乒乓球B．一只母鸡C．一张桌子D．一头牛