题目

阅读下面短文，请根据所给中文正确拼写单词，使短文意思完整。每空限填一词。       Every 30 seconds there is an earthquake. But don’t  1    （担忧） because most are so weak that they can’t be felt. But a few big ones hurt people.       Many earthquakes happened in   2    （中国），such as the big one in Sichuan in 2008.    3     （千）of people 4（死）in it. So it’s important to know what to do when one hits. Here are some tips on how to stay 5（安全）in an earthquake.      1. If you are indoors duri如图所示，属于光的折射现象的是（     ）A．遥控器调电视B．激光准直C．渔民叉鱼D．照镜子