题目内容
【题目】铁制品在通常情况下很易生锈,制造时往往在铁制品表面电镀一层铜起防锈作用,下列说法正确的是( )
A.镀铜铁制品不可在酸性条件下使用
B.镀铜铁制品可以盛放硝酸银溶液
C.镀铜铁制品不易生锈的原因之一是使铁隔绝了空气
D.镀铜铁制品是一种合金
【答案】C
【解析】
试题分析:铜在金属活动性顺序表氢的后面,化学性质稳定,在其中不易锈蚀、与酸不发生反应,但能与硝酸银溶液发生置换反应,因此,镀铜铁制品可以在酸性条件下使用,A错误;铜能置换硝酸银溶液中的银,B错误;铜在空气中不易生锈,铁制品镀铜后,使铁与空气隔绝,防止了的铁的锈蚀,C正确;合金是金属或非金属均匀地熔合在一起,镀铜铁制品铜和铁不是均匀地熔合,不属于合金,D错误。故选C
![](http://thumb2018.1010pic.com/images/loading.gif)
【题目】书面表达(15分)
新的初中生活已经开始。假如你是刘强。请根据表格内容,写一篇介绍自己的小短文。可以适当发挥。词数40左右。开头和结尾已给出,不计入总词数。
姓名 | 刘强 |
年龄 | 12岁 |
班级 | 七(6) 50人 |
爱好 | 踢足球 听音乐 |
…… |
Hello, everyone! ___________________________________________________________________________
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Thank you!
【题目】词语运用(10小题,每小题1分,共10分)
先阅读短文,掌握其大意。然后从方框中所给的词中选出恰当的10个,并用其适当形式填空,每个词限用一次。(每小题1分)
quiet rain on however so walk they but smell enjoyable |
I live in a small 1 nice village. I love it because it’s 2 , and there are a lot of trees. My friends and I often play football 3 the field near my house. 4 , after it 5 , the field is too wet to play on. We like to 6 along the river. We can 7 the flowers and listen to the birds. It is very 8 . My village is a comfortable place to live in. When my friends come to visit, I always have 9 much to show 10 .