以下说法中正确的是（ ） A．物体做匀速直线运动，机械能一定守恒 B．物体所受合

短文改错（共10小题；每小题1分，满分10分）

假如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。文中共有10处语言错误。每句中最多有两处，每处错误仅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（∧），并在下面加上该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

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（从第11处起）不计分。

It was Sunday and without homework, I got up late. After finishing the breakfast, I began to surf the Internet. About one and a half hour later, when Mom noticed that I still playing computer games, she was very annoyed that she scolded me, she said I shouldn’t be so addicted to the Internet and ignored my study as the college entrance tests were drawing nearer. I said that this was necessary to have a rest to refresh myself. Mom left angry. It was at that moment when I realized I was wrong. I said sorry, and promised I wouldn’t do that again. Mom hoped that I wouldn’t cost too much time on the Internet any more.

混凝土构筑物裂缝的控制是给排水结构工程施工质量控制的关键环节。施工过程中防止构筑物裂缝的方法有()。

A.掺加外加剂降低混凝土的水化热峰值

B.增加水泥用量或水用量，提高水灰

C.合理设置后浇带

D.要尽可能增加入模坍落度

E.降低混凝土的入模温度

被誉为塔尔寺的“艺术三绝”是酥油花、（）和（）。

内服常与豆腐同煮后阴干用的药物是（）

A.升药

B.雄黄

C.硫黄

D.白矾

E.硼砂

13号、13A型钩尾销孔边缘裂纹长度不超过裂纹处孔边至侧、端面距离的（）时焊修。

A.20%

B.30%

C.40%

D.50%