题目

地震波中横波表现为左右摇晃，纵波表现为上下跳动，一般认为横波的水平晃动力是造成建筑物破坏及的人员大量伤亡的主要原因．但地震发生以后，建筑物并不会马上倒塌，一般都要间隔10多秒的时间，这就是地震救援领域所说的“黄金12秒”，在这12秒中人们可以决定是躲是逃．根据所学知识推断“黄金12秒”确定的依据是（） A . 横波和纵波的传播介质差异 B . 建筑物的抗震系数 C . 横波和纵波的传播速度差异 D . 人体对紧急事件的生理反应能力 完形填空。 　　Marc sat next to me when we were in Hill Junior School．He had a serious 　　1　　 in communicating with people．One always had to guess what he was saying．　　2　　, most of my classmates did not like to be with him because his hands and shirts were always 　　3　　．I tried to let him know the importance of being clean by 　　4　　 him several times a day to wash his hands．But he just could not understand． 　　One day, our teacher Miss West walked up to Marc．　　5　　 saying anything, she took Marc to the washroom．Slowly, Miss West washed his 　　6　　 and told him that he should keep himself clean．She did that every day for one month．　　7　　, Marc understood． 　　Miss West's love has given me a good example to follow when I 　　8　　 my job．I always remember to teach my students by showing them the right 　　9　　 to do things．And most important of all, I always remember to give them 　　10　　 to learn and to grow up． (1) [　　] A． question B． problem C． accident D． hobby (2) [　　] A． Instead B． However C． Besides D． Except (3) [　　] A． dirty B． clean C． new D． old (4) [　　] A． talking B． saying C． speaking D． telling (5) [　　] A． With B． Without C． After D． Above (6) [　　] A． face B． feet C． shirts D． hands (7) [　　] A． At last B． At first C． Such as D． So far (8) [　　] A． did B． am doing C． have done D． am going to do (9) [　　] A． ways B． answers C． time D． food (10) [　　] A． more advice B． less advice C． more time D． less time