根据你的生活经验和所学的化学知识,判断下列做法(或说法)不正确的是 A.利用洗涤

题型:选择题

问题:

根据你的生活经验和所学的化学知识,判断下列做法(或说法)不正确的是

A.利用洗涤剂的乳化功能可洗去餐具上的油污

B.用钢丝球洗刷铝制炊具

C.稀硫酸、稀盐酸都可以用与金属表面除锈

D.油锅着火时,迅速盖上锅盖

考点:化学元素和人体健康六大营养素化学图标家庭小实验、趣味实验
题型:选择题

臭氧主要分布在离地面10km~50km的高空,保护地球生物免遭紫外线的侵害,臭氧的化学式O3,臭氧属于(  )

A.化合物

B.混合物

C.单质

D.氧化物

题型:选择题
任务型阅读(共5小题;每小题1 分,满分5 分)
请仔细阅读小题,从A、B、C、D中找出其相对应的选项, 并回答第5小题。
小题1:Pop singer Yoga Lin is famous for his beautiful singing. But he is trying to be a good storyteller. His new book We’ve met before is now out. It has 12 stories about family, love and sadness. And  Lin has a song to go with each story.
小题2: Two ancient Chinese relics(文物)were auctioned(拍卖)off last Wednesday in Paris. The buyer is said to be a businessman from Fujian, China, Though some ancient Chinese relics have returned to China, some are still missing. Many Chinese are very angry about this auction and they said these relics should have returned to their motherland without any excuse.
小题3:A study from the School Nutrition Association in the USA shows that cool names can make for cool foods, Scientists think giving a food a fun name makes kids think it will be more fun to eat. They did experiments. The results proved what they thought was quite true.
小题4: For American basketball player Kevin Durant, life as a shining star has just begun. As is known to all, his success may lie in his untiring struggle. There is no doubt that his experience may remind us of the old saying “No pains, no gains”. And everyone, keep moving and just do it.
A. Stolen Art Sold in Paris  
B. Trendy Names Make Food Sound Tastier
C. Secret to Success       
D. Singer Turns to Storyteller
小题5:Where can you probably find the information?
A.In the magazineB.In the textbook
C.In the advertisementD.In the newspaper
题型:选择题

2012年瑞士达沃斯世界经济论坛的主题是“大转型,塑造新模式”。随着全球金融危机持续,经济低迷,人们充分认识到目前需要进行全面深入的变革,反思成为本次论坛的热词之一。据此,以下判断准确的是 [ ]

A.本次论坛的主题“大转型,塑造新模式”属于人们对守旧意识的反映

B.全面深入的反思积累到一定程度必然导致全球经济渡过金融危机的寒冬

C.人们对当前世界经济形势的反思是推动本次论坛认识深化发展的唯一动力

D.全面深入的反思和变革表明辩证法的革命批判精神与创新意识是紧密联系的

题型:选择题

下列不属于变更税务登记的事项是()。

A.纳税人因经营地的迁移而要改变原主管税务机关

B.改变法定代表人

C.增减注册资金

D.改变开户银行账号

题型:选择题

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