题目

Ⅰ．用所给单词的适当形式填空【1】It is important for students ______ (study) English.【2】Mo Yan is one of ______ (famous) writers in China.【3】Who was the first ______ (get) to school today?【4】The national flag ______ (use) as a symbol of the country.【5】I ______ (return) the book as soon as I finish reading it. 答案：【答案】【1】to study【2】the most famous【3】to get【4】is used【5】will return【解析】【1】句意：对于学生来说，学习英语非常重要。根据句型“It is+形容词+for sb. to do sth.”（对于某人来说，做某事是……），it是形式主语，to dosth.是真正主语，故此处为to study。【2】句意：莫言是中国最著名的作家之一。如图所示，一平面镜放在圆筒的中心处，平面镜正对筒壁上一点光源S，点光源发出一细光束垂直射向平面镜．平面镜从图示位置开始绕圆筒中心轴O匀速转动，当转过角度为30°时，照射到筒壁上的反射光斑转过的角度为 ，像点与点光源S的连线转过的角度为 ．