【题目】 —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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【题目】世界每年因锈蚀而损失的金属数量巨大,防止金属锈蚀已成为科学研究中的重大问题.下列有关金属锈蚀与保护的措施中不正确的是( )
A.铁锈蚀的实质是铁与空气中的氧气、水蒸气等发生了化学变化
B.同样的铁制品在海南比兰州更易锈蚀
C.在铁表面刷油漆可以防止铁锈蚀
D.铝的抗腐蚀性能比铁强,生活中可用钢丝球洗刷铝锅
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【题目】句型转换。
1. There is a post office on New Street. (改为一般疑问句)]
__________ __________ 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. (改为同义句)
Lucy sits __________ Susan __________ George.
4. My backpack is behind the chair. (改为同义句)
The backpack __________ __________ __________ is __________.[来
5. The library is near her house. (就画线部分提问)
__________ __________ the library?
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【题目】 He needs __________ hamburgers because he is very hungry.
A. two more B. more two
C. other two D. two another
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【题目】下列关于溶液的说法中不正确的是( )
A.溶液都是无色透明的 B.溶液一定是混合物
C.溶液都是均一、稳定的 D.溶液都是由两种或两种以上物质组成的
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【题目】—__________ 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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【题目】溶液是由一种或几种物质分散到另一种物质里,形成的________而________的混合物.能溶解其他物质的物质叫做________,被溶解的物质叫做________.溶液由________在________里溶解而成.如碘酒中碘是________,酒精是________.固体、气体溶于液体时,________是溶质,________是溶剂.两种液体相互溶解时,通常把量多的一种叫做________;当其他液体和水相互溶解时,通常都习惯把水看作溶剂.通常没有指明溶剂的溶液,一般是指________.水是最重要的溶剂,但却不是唯一的溶剂.
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【题目】Lisa has an interesting hobby. She likes collecting stamps(邮票).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(硬币)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(卖)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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【题目】将0.5g某物质在20℃时溶于10g水中即达饱和,则一般把这种物质的溶解性划分为( )
A.易溶物质 B.可溶物质 C.微溶物质 D.难溶物质
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