【題目】溶液是由一種或幾種物質(zhì)分散到另一種物質(zhì)里,形成的________而________的混合物.能溶解其他物質(zhì)的物質(zhì)叫做________,被溶解的物質(zhì)叫做________.溶液由________在________里溶解而成.如碘酒中碘是________,酒精是________.固體、氣體溶于液體時,________是溶質(zhì),________是溶劑.兩種液體相互溶解時,通常把量多的一種叫做________;當其他液體和水相互溶解時,通常都習慣把水看作溶劑.通常沒有指明溶劑的溶液,一般是指________.水是最重要的溶劑,但卻不是唯一的溶劑.
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【題目】 —How old is Mary?
—She is having her __________ birthday this weekend.
A. four B. the four C. fourth D. the fourth
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【題目】用括號里所給單詞的適當形式填空。
【1】 I am watching my dog __________ (play) with a ball now.
【2】 Children often enjoy __________ (play) computer games.
【3】 __________ (take) a bus from Sixth Avenue and go down Bridge Street.
【4】 Walk down New Street and turn left at the first __________ (cross).
【5】 Do you want __________ (buy) books?
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【題目】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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【題目】 根據(jù)句意和漢語提示寫出單詞。
【1】Daniel with his classmates often _______ (借) many books from the school library,
【2】I like _______ (地理)best, because 1 like travelling.
【3】There are all _______ (種類)of books in our school library.
【4】After _______ (課), we often say goodbye to our teacher.
【5】Don't frighten (嚇唬)him. He is _______ (僅僅) five years old.
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【題目】根據(jù)所給提示完成句子
【1】I like him because he sings ______ (wonderful).
【2】A woman came into the shop and______(buy) a cake.
【3】Good chances always hide ______(某處) around us, waiting for careful people to find them.
【4】No one likes______ (visit) with bad habits.
【5】She took lots of beautiful ______(photo) during her stay in Europe.
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【題目】如圖為甲、乙、丙三種固體物質(zhì)在水中的溶解度曲線,下列說法錯誤的是( )
A.t2℃時甲、乙兩物質(zhì)的溶解度相等
B.溫度大于t2℃時,甲、乙、丙三種固體物質(zhì)溶解度大小關系是甲>乙>丙
C.當甲中混入少量乙時,可用冷卻熱飽和溶液的方法得到較純凈的甲
D.t2℃時甲、丙兩物質(zhì)的等質(zhì)量飽和溶液降溫到t1℃時,二者所得溶液中溶質(zhì)質(zhì)量都不會改變
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