提到防雷,大家很容易联想到避雷针。其实我们平常看到的避雷针是用来保护房屋免遭雷电直击 发布时间:2017-11-20 23:11 │ 来源:www.tikuol.com 题型:填空题 问题: 提到防雷,大家很容易联想到避雷针。其实我们平常看到的避雷针是用来保护房屋免遭雷电直击即防直击雷的。计算机信息系统的电子设备雷害一般由()产生,因此防护的方法完全不一样。
题型:填空题 News 1Huang Heshan, a boy from Taipin, Mazhang, has moved(感动) many people in Zhanjiang. Thanks to Huang Heshan, Yang Kangshao can go to school every day. Yang is disabled, but Huang Heshan carries him to school on his back. It’s eight years since he started to do that. They help each other. At school, Yang helps Huang with his study, too. Huang says that he feels happy when he can do something to help disabled people. News 2 In Zhanjiang City, the Forest Park is a good place for families to have fun. There are many green trees and the air is fresh. People can have different activities in the park. However, we can also find the waste bags and other rubbish everywhere. How can we get such bad environment? Now it’s time to keep the park clean if we want to have a nice field trip. News 3 On March 25, more than four thousand people started to run from Zhanjiang Convention and Exhibition Center(湛江会展中心). All the runners ran about 4.7 kilometers. They took part in the activity to lead a healthy life and show the spirit(精神) of the people in Zhanjiang. After running, many runners singed their names on the wall.小题1:In News 1, we know Huang Heshan has helped Yang Kangshao for _____.A.eight daysB.eight weeksC.eight monthsD.eight years小题2:We should _____ if we want to have a nice field trip in the Forest Park.A.throw the rubbishB.find some waste bags C.plant more treesD.help keep the environment clean小题3:To lead a healthy life, over four thousand people _____ on March 25.A.cleaned the parkB.singed their names on the wallC.ran about 4.7 kilometersD.started to help disabled people小题4:According to the news, we can know something happened in _____.A.BeijingB.ZhanjiangC.GuangzhouD.Mazhang小题5:We may know the news above from _____.A.a newspaperB.a bookC.a magazineD.a 查看答案
题型:填空题 下列叙述正确的是( )A.发生化学反应时失去电子越多的金属原子,还原能力越强B.金属阳离子被还原后,一定得到该元素的单质C.使用简易布袋代替塑料购物袋,一定程度上可以达到减少环境污染D.碱金属锂可以保存在煤油里 查看答案