假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。                               文中10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（^ ), 并在其下面写出该加的词。

删除：把多余的词用斜线（\)划掉。

修改：在错的词下划一条横线，并在该词下面写出修改后的词。

注意：1. 每处错误及其修改均仅限一词;  2. 只允许修改10处，多者（从11处起）不计分。

Tom is a senior two students who devotes himself to his lessons every day. Last Saturday, as usual, he went to several courses. In the evening, he studies at home until deep into the night. He was too sleepy and tired that he couldn’t work effectively. In Sunday morning, Tom was about to study when his father came up and advised him to have break. Soon they had a good idea. They bought a kite which they liked it very much and then the family went to the suburbs where Tom enjoyed fly the kite himself. The family had a picnic together but felt very relaxed in the open air. On Monday, Tom was energetic and actively in class. He said it was only why he had a better weekend.

下列说法正确的是（）。

A.抗压强度在数值上等于岩石受压破坏时的极限应力

B.抗拉强度在数值上等于岩石单向拉伸被拉断破坏时的最大张应力

C.抗剪强度在数值上等于岩石受剪破坏时的极限剪应力

D.岩石在一定压应力下剪断时，剪破面上的最大剪应力称为抗剪断强度

E.抗剪断强度是沿着岩石裂隙或软弱面等发生剪切滑动时的指标，远远大于抗剪强度