题目

 To their great fear, they found _______ in the heaviest snowfall they had ever had. A．they were catching                                     B．themselves caught C．they had caught                                         D．themselves catching 答案：B 【详解】 考查反身代词和过去分词用法。句意：让他们害怕的是，他们发现自己陷入了从未遇见过的大雪之中。主语与宾语表示同一个人时，宾语用反身代词，be caught in陷入……；本题使用过去分词做宾语补足语。故B正确。19．19%=$\frac{（\;\;\;\;\;）}{（\;\;\;\;\;）}$=0.19（填小数）$\frac{3}{5}$=60%=0.6（填小数）72%=$\frac{（\;\;\;\;\;）}{（\;\;\;\;\;）}$=0.72（填小数）