【题目】某兴趣小组利用家中的材料研究影响物质溶解性的因素,实验步骤设计如下:
Ⅰ.称取六份冰糖和一份食盐,每10g为一份,并将其中五份冰糖研磨成粉末.
Ⅱ.按照下表进行实验(实验所需仪器略)
第一组 | 第二组 | 第三组 | 第四组 | ||||
实验温度 | 20℃ | 20℃ | 20℃ | 20℃ | 20℃ | 20℃ | 80℃ |
固体种类 | 冰糖 | 冰糖 | 冰糖(粉末) | 冰糖(块状) | 冰糖 | 食盐 | 冰糖 |
固体质量 | 10g | 10g | 10g | 10g | 10g | 10g | 10g |
溶剂种类 | 水 | 植物油 | 水 | 水 | 水 | 水 | 水 |
溶剂质量 | 50g | 50g | 10g | 10g | 10g | 10g | 10g |
请你对他们的实验设计进行分析:
(1)根据上述设计,你认为他们准备研究的影响因素是________________________________,其中不影响物质溶解性的因素是________________________________________.
(2)根据第四组实验与前三组实验的比较,你可以得到的结论是________________________.
(3)你认为第四组实验的设计是否会影响实验结论的得出,请简述理由:________________________________________________________________.
科目:初中地理 来源: 题型:
【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!
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【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 .
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【题目】—How much are these shoes?
—__________ twenty dollars.
A. It’s B. There are C. They’re D. Their is
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A. bad B. boring C. successful D. scary
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【题目】You can buy socks __________ girls __________ only five dollars each.
A. to; to B. for; to C. for; for D. to; for
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【题目】完形填空(10小题,每小题1分,共10分)
Tom ___1___ near the sea. Their house is not very high, but it is beautiful. There ___2___ big trees and a small garden in front ___3___ their house. They plant flowers in the garden. Some are red, some are white ___4___ some are blue. Tom and his family love ___5___ garden very much.
___6___ Tom and his sister go to school ___7___ bus. The bus is comfortable. There are air conditioners in the bus. And it is a double-decker bus. After school, they sometimes help their mum __8___ some shopping at the Shopping Center, and sometimes help their dad in the garden. At weekends, they often take some photos by the sea. ___9___ summer, they often go swimming __10__ their parents.
【1】A. lives B. lived C. living D. to live
【2】A. are B. is C. was D. be
【3】A. to B. for C. at D. of
【4】A. but B. or C. at D. and
【5】A. they B. them C. their D. theirs
【6】A. All B. Both C. Some D. Two
【7】A. on B. by C. take D. sit
【8】A. do B. doing C. does D. did
【9】A. In B. On C. At D. To
【10】A. and B. for C. of D. with
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【题目】一We're going to have a basketball match with Class 3.
一 .
A. Wish you good luck B. Let me see
C. Thank you D. Have a good time
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