【題目】一杯20℃的NaNO3溶液,能證明它是飽和溶液的是( )
A.蒸發(fā)10g水有NaNO3晶體析出
B.降低10℃時,有NaNO3晶體析出
C.加入10gNANO3晶體,仍有NaNO3晶體未溶解
D.在該溫度下,加入少許NANO3晶體,晶體質(zhì)量不減少
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【題目】“搖搖冰”是一種即用即冷的飲料。吸食時將飲料罐隔離層中的化學(xué)物質(zhì)和水混
合后搖動即會制冷.該化學(xué)物質(zhì)是 ( )
A.氯化鈉 B.固體硝酸銨 C.固體氫氧化鈉 D.生石灰
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【題目】四、情景交際(有兩項多余)
A: Where did you go on vacation, Peter?
B: 【1】
A: Oh, Qingdao is a beautiful city. 【2】
B:Yes, I did. I went with my brother.
A: 【3】
B:We visited Zhongshan Park, swam in the sea and tasted some
seafood on the beach.
A: Sounds great!【4】
B: We stayed there for three days. 【5】 Where did you go, Julia?
A:Well, I just stayed at home and helped my parents clean the house.
A. What about you?
B. How long did you stay there?
C.I went to Qingdao during the vacation.
D. What did you do in Qingdao?
E.Is it your first time to Qingdao?
F. Did you go with anyone?
G. How are you?
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【題目】佛山市三水健力寶廠生產(chǎn)的“魔水”馳名中外.“魔水”內(nèi)溶有一定量的二氧化碳?xì)怏w.打開瓶塞,“魔水”會自動噴出;喝了“魔水”后常會打嗝,說明氣體在水中的溶解度與壓強、溫度有關(guān).以下關(guān)于氣體溶解度的說法正確的是( )
A.壓強增大,氣體溶解度不變
B.壓強減小,氣體溶解度增大
C.溫度升高,氣體溶解度減小
D.溫度降低,氣體溶解度減小
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【題目】I have _________ uncle. He likes _________very much. He ______ soccer, baseball,volleyball, basketball, and so on. He plays baseball and basketball very_____. He likes to ____ the sports games ______TV. He plays sports_____.He often says, “Let’s_____…”He_____two clubs: a basketball club and a baseball club. He __ a sports collection. He has 12 tennis rackets, 10 baseballs, 3 volleyballs, 2 basketballs and one soccer ball.
【1】A. a B. an C. the D. is
【2】A. vegetables B. books C. music D. sports
【3】A. loves B. have C. joins D. play
【4】A. much B. more C. well D. good
【5】A. play B. plays C. watch D. watches
【6】A. in B. on C. to D. of
【7】A. everyday B. some day C. every day D. someday
【8】A. plays B. play C. playing D. to play
【9】A. joins B. plays C. asks D. takes
【10】A. have B. has C. doesn't have D. don’t have
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【題目】在某溫度時有一杯某物質(zhì)的飽和溶液,在溫度不變的條件下蒸發(fā)一部分溶劑后,
有晶體析出,則該溶液 ( )
A、仍為飽和溶液
B、溶液中溶質(zhì)的質(zhì)量不變
C、該溫度時,該溶質(zhì)溶解度變小
D、變成不飽和溶液
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【題目】發(fā)展教育和科學(xué)是先進文化建設(shè)的
A.重要保障
B.重要內(nèi)容和中心環(huán)節(jié)
C.基礎(chǔ)工程
D.物質(zhì)基礎(chǔ)
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