【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】世界每年因銹蝕而損失的金屬數(shù)量巨大,防止金屬銹蝕已成為科學研究中的重大問題.下列有關(guān)金屬銹蝕與保護的措施中不正確的是( )
A.鐵銹蝕的實質(zhì)是鐵與空氣中的氧氣、水蒸氣等發(fā)生了化學變化
B.同樣的鐵制品在海南比蘭州更易銹蝕
C.在鐵表面刷油漆可以防止鐵銹蝕
D.鋁的抗腐蝕性能比鐵強,生活中可用鋼絲球洗刷鋁鍋
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【題目】句型轉(zhuǎn)換。
1. There is a post office on New Street. (改為一般疑問句)]
__________ __________ a post office on New Street?
2. Are there two shops near here?(作否定回答)
__________, __________ __________.
3. Lucy sits on Susan’s left and George’s right. (改為同義句)
Lucy sits __________ Susan __________ George.
4. My backpack is behind the chair. (改為同義句)
The backpack __________ __________ __________ is __________.[來
5. The library is near her house. (就畫線部分提問)
__________ __________ the library?
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【題目】 He needs __________ hamburgers because he is very hungry.
A. two more B. more two
C. other two D. two another
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【題目】下列關(guān)于溶液的說法中不正確的是( )
A.溶液都是無色透明的 B.溶液一定是混合物
C.溶液都是均一、穩(wěn)定的 D.溶液都是由兩種或兩種以上物質(zhì)組成的
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【題目】—__________ do you go to visit your grandparents?
—Less than three times a month.
A. How long B. How often
C. How much D. How many
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【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】Lisa has an interesting hobby. She likes collecting stamps(郵票).She usually collects stamps after school. Now she has five hundred stamps from all over the world. And four hundred of them are in colour.
Lisa likes stamps with pictures of animals in them. In this way,she knows the names of many animals. She also borrows books about animals from her school library. She learns a lot about them.
Sometimes Lisa has many stamps of the same kind. So she usually gives them to her friends. Then they give her other stamps.
Lisa writes to her friends in many countries. She sends them stamps of her own country. And her friends send her stamps of their countries. Lisa's father also buys stamps for her. Many of Lisa's friends collect other things. Some collect coins(硬幣)and others collect cards.
【1】How many colour stamps does Lisa have?
A. One hundred. B. Four hundred.
C. Five hundred. D. Nine hundred.
【2】Why does Lisa like stamps with pictures of animals in them?
A. Because she wants to feed some animals.
B. Because she can make much money.
C. Because she can know the names of many animals.
D. Because she will borrow some animals from her friends.
【3】Sometimes Lisa has many stamps of the same kind. She usually .
A. keeps them
B. throws them away
C. sells(賣)them to her friends
D. sends them to her friends
【4】Which of the following is TRUE according to the passage?
A. Lisa writes to her friends in many countries.
B. Lisa's mother often buys stamps for her.
C. Lisa's stamps are all in colour.
D. Lisa borrows books about stamps from her school library.
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【題目】將0.5g某物質(zhì)在20℃時溶于10g水中即達飽和,則一般把這種物質(zhì)的溶解性劃分為( )
A.易溶物質(zhì) B.可溶物質(zhì) C.微溶物質(zhì) D.難溶物質(zhì)
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