补脾经,补肾经,推三关,揉百会、丹田可治疗小儿:()
A.遗尿、脱肛
B.惊风、惊痫、烦躁
C.痰喘气急、咳嗽呕吐
D.脾胃虚弱、积食不化
E.胃脘胀满、腹泻
参考答案:A
燃烧是人类最早利用的化学反应之一。
(1)下面是一些常用的灭火方法的事例:
①熄灭酒精灯时,用灯帽盖灭;
②熄灭燃气灶火焰时,关闭阀门;
③油锅着火时,用锅盖盖灭;
④森林着火时,将大火蔓延线路前的一片树木砍掉;
⑤房屋着火时,用高压水枪灭火。
请你从灭火原理角度,选择一种分类标准进行分类:
分类标准 包括事例 (填序号)
(2)打火机中常用丁烷(C4H10)做燃料,丁烷与甲烷完全燃烧产物相同,请写出丁烷完全燃烧的化学方程式 。
第四部分:写作(共两节,满分35分)
第一节:短文改错(共10小题;每小题1分,满分10分)
增加:在缺词处加一个漏词符号(∧),并在此符号下面写出该加的词。
删除:把多余的词用斜线(╲)划掉
修改:在错的词下划一横线,并在该词下面写出修改后的词
One evening, Helen was preparing her examination in the basement of the house. Her parents had gone out shopping. Suddenly, he heard footsteps on the floor below. Known that she was the only person at home, she was frightened. Obviously, a thief has come in through the window that had been left opened for fresh air. Picking up her courage, Helen took a toy gun from the cupboard and went to upstairs. On her way, she shouted, “George, take the dog out.” To frightened the thief, she turned off some lights. The thief must have heard all the noises but rushed out through the window where he came in. Now, Helen felt somewhat relieved.