【題目】從組成上看,溶液是由________和________組成的;從質(zhì)量上看,溶液的質(zhì)量________溶質(zhì)和溶劑的質(zhì)量之和;從體積上看,溶液的體積______溶質(zhì)和溶劑的體積之和。
科目:初中地理 來源: 題型:
【題目】南極是世界上最冷的地方,常年平均氣溫是-25℃,一天企鵝媽媽與小企鵝之間發(fā)生了一次有趣的對話,它們的部分說法如下,其中正確的是( )
A. 小企鵝:媽媽,這么冷,我都沒溫度了。
B. 企鵝媽媽:不對,是沒有內(nèi)能。
C. 小企鵝:冰天雪地的,可能連水蒸氣都沒有吧。
D. 企鵝媽媽:呵呵,水蒸氣倒肯定有,因為冰是可以升華的呀。
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【題目】補全對話(5小題,每小題2分,共10分)
從方框中選擇適當?shù)木渥友a全對話,有兩項多余。
Tony: How many people are there in your family?
Betty: 1 .
Tony: Have you got any grandparents?
Betty: 2 .
Tony: Where do they live?
Betty: 3 .
Tony: 4 .
Betty: Yes. My father has got a sister. And my mother has got a brother.
Tony: 5 .
Betty: Yes, I have got a dog at home. I like it very much.
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【題目】英國科技人員研制出自動滅火陶瓷磚,磚里壓入了一定量的氦氣和二氧化碳。這種磚砌成的房屋發(fā)生火災時,在高溫烘燒下,磚會裂開并噴出氦氣和二氧化碳,從而抑制和撲滅火焰。自動滅火陶瓷磚的滅火原理是( )。
A.清除可燃物
B.使燃燒物與氧氣隔絕
C.降低燃燒物的著火點
D.使燃燒物的溫度降低到著火點以下
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【題目】B
June is from England. Her family are in Beijing now. She is fourteen years old. The date of her birth is September seventh. Her father, Mr Smith, is an English teacher. And her mother, Mrs Smith, is an English teacher, too. They all like Chinese movies. Mr Smith likes action movies. He thinks they are really exciting. His favorite actor is Jet Li. Mrs Smith likes Beijing Opera. She thinks she can learn much about Chinese history by seeing them. And June herself likes comedies. Her favorite actor is Zhao Benshan. She thinks he is very funny. She also thinks Zhao Benshan’s movies are better(更好) than Rowan Atkinson’s. Mr Smith and Mrs Smith like Beijing Roast Duck(北京烤鴨). They often go to Quanjude to have it.
【1】June is __________.
A. a Chinese boy B. a Chinese girl
C. an American girl D. an English girl
【2】 June is ___________.
A. twelve B. thirteen C. fourteen D. fifteen
【3】 June’ s birthday is ________.
A. December seventh B. September seventh
C. December eleventh D. September eleventh
【4】 ________ likes action movies.
A. June B. Mr Smith C. Mrs Smith D. Nobody
【5】 ________ like(s) Beijing Roast Duck.
A. June B. Mr Smith
C. Mrs Smith D. Mr Smith and Mrs Smith
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【題目】區(qū)別下列各組物質(zhì),所選擇的試劑或方法正確的是( )
選項 | 需區(qū)別的物質(zhì) | 選擇的試劑或方法 |
A | 水與氨水 | 酚酞試液 |
B | 氫氣和甲烷 | 點燃,觀察火焰顏色 |
C | 氮氣與二氧化碳 | 燃著的木條 |
D | 二氧化碳和一氧化碳 |
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【題目】 —__________?
—Yes, please. I want a sweater.
A. How much B. Can I help you
C. Excuse me D. What will you take
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