题目内容
8．Please _______ spend too much time playing computer games．It wastes a lot of time．（ ）| A． | not | B． | aren't | C． | don't | D． | not to |
分析 请不要花费过多的时间玩电脑游戏．这是在浪费时间．
解答 答案：C．
根据句中关键词It wastes a lot of time可知它浪费了很多时间，应是不要花费过多的时间玩电脑游戏；动词spend放于句子开头应是祈使句，其否定句在动词前加don't．故选：C．
点评 本题考查祈使句的否定句．祈使句的否定句应是don't开头．
千里马走向假期期末仿真试卷寒假系列答案Student Helper Wanted The English Club needs a weekend student helper for primary students . You must : be a middle school student be good at English speaking be talented in English songs be good with children at the age of 6 to 12 be outgoing Call the English Club at 553-4329 for more information or find us at www.englishclub.com. Email address : englishclub2015@163.com |
1.The English club wants to find a __________ .
A. teacher B. runner C. student helperD. child
2.You must __________ to get the job .
A. be a primary school student B. be good at Chinese study
C. sing and dance D. be talented in English songs
3.You can’t __________ for more information .
A. call the English club at 553-4329
B. email at englishclub2015@163.com
C. ask the teacher
D. find them at www.englishclub.com.
| Below is a description of a single scientific experiment．It shows us how iron reacts （ 反应） with air and with water． Aim：To find out if iron rusts（ 生锈） （a） in dry air； （b） in water that has no air in it （ air-free water）； （c） in ordinary water． Materials：3clean iron nails （ 铁钉）； test tubes； test tube holder； cotton wool； oil； Bunsen burner． | |
| Iron in dry air Method （1）Put some iron nails at the bottom of a test tube． （2）Push some cotton wool down the tube． （3）Leave the tube for one week． Result After one week，the nails have not rusted． Conclusion Iron does not rust in dry air． Iron in air-free water Method （1）Half-fill a test tube with water． （2）Boil the water for three minutes．（ This makes sure there is no air in the water． （3）Put two or three clean nails in the water． | （4）Add some oil to the water．（ This will keep air out of the water．） （5）Leave the tube for one week． Result The nails do not rust in the tube with air-free water． Conclusion Iron does not rust in air-free water． Iron in ordinary water Method （1）Half-fill a test tube with water and add two or three clean nails． （2）Leave the tube for one week． Result The nails rust in the tube with ordinary water． Conclusion Iron rusts in ordinary water．（238words） |
A．keep the air dry B．keep the tube wet
C．make the nails rust D．keep the tube clean
36．What are necessary steps to make sure the water in the tube is air free？D
①Leave half a tube of water in it ②Boil the water for some time
③Put some clean iron nails in the tube ④Add some oil to the water
A．①②B．①③C．②③D．②④
37．We can conclude from the experiment that onlyC makes iron rusty．
A．dry air B．cotton wool C．ordinary water D．air-free water．