吞服腐蚀性剂后最早出现和最明显的症状为
A.口腔、咽喉、胸骨后及上腹部剧痛
B.咽下困难、恶心、呕吐
C.食管或胃穿孔
D.休克
E.呕血
参考答案:A
根据句子的意思,用括号中所给汉语提示或英语单词的适当形式填空。
1.A _________ is a person who plans and draws how something will look.
2.There is something wrong with the computer. You should ________(start again) it.
3.A new e_________ (教育性的) CD-ROM called "Online Traveler" has come out.
4.Mr. Liu is a teacher with a lot of __________ (经验). He has ways to make his class lively.
5.We all know that the Great Wall is the s__________ of our country.
二类高层公共建筑的下列()部位应设自动喷水灭火系统。
A、公共活动用房
B、空调机房
C、可燃物品库房
D、旅馆的客房