在一切社会形态中都起作用的经济规律有( )。 A．生产关系一定要适合生产力性质的规律

按要求完成句子，一空一词。（10分）

小题1:Are there any books in the bag? (作肯定回答)

__________,there________. 

小题2: His pen is on the desk.（对画线部分提问）

________    _______ his pen? 

小题3:Lingling is twelve years old. （对画线部分提问）

_______ _______ is Lingling? 

小题4:There are some flowers on the table.（改为否定句）

There_________ _________ flowers on the table. 

小题5:大明在哪儿？（翻译成英语）

_________ _________Daming?

探伤车探轮耦合液不能用自来水替代。

阅读理解。

     The other day in school we were discussing jobs. Our teacher, Mrs. Bolt, said that vocations were very

important and that it was never too early to think about your life's work. Most of the children really weren't

too sure about what they wanted to be. But I knew exactly what I wanted to be, and when Mrs. Bolt asked

me, I replied "A truck driver."

      "A truck driver," repeated Mrs. Bolt. "Why do you want to be a truck driver, Kenneth?" 

     "Because truck drivers are always on the move. They don't have to sit at desks all day. They're out on

the road and they see a lot of the country. The pay is good, too. And you never have any homework."

     The class laughed.

     "Well, Kenneth," answered Mrs. Bolt. "You certainly sound enthusiastic. I guessed that you don't like

sitting at a desk or doing homework. Is that correct, Kenneth?"

     "Yes, I guess so," I said.

     "Well, since you are so interested in becoming a truck driver, I think you should investigate the field a little

further. I want you to go to the library and take out a book on truck driving. And I want you to write a book

report on it and hand it at the end of the month."

     "That's the last time I'll ever tell anybody my secret ambition!"

1. The word "vocations" in the first paragraph here means _____.

A. works

B. jobs

C. holidays

D. ambition

2. Why did Mrs. Bolt ask Kenneth to write the book report? Because _____.

A. she wanted him to learn about the other side of truck driving

B. she was angry with him

C. she was not satisfied with the reasons he gave

D. she wanted the whole class to follow his example

3. Which sentence does not agree with the general idea of the text?

A. Truck drivers are well paid.

B. Kenneth's wish made the whole class burst into laughter Kenneth enjoyed sitting at a desk

    doing his lessons.

C. Mrs. Bolt wanted Kenneth to write a book report.

D. It seemed as if Kenneth did not enjoy sitting at a desk or doing his lessons .

4. Why won't Kenneth tell about his ambition any more?

A. Because he can't realize his ambition

B. He just got more homework to do because he had told Mrs. Bolt about it

C. Because he was scolded by Mrs. Bolt

D. Because he was laughed at by the whole class

把一物体放入水中时受力情况如图所示，则物体将              （填“上浮”、“悬浮”或“下沉"）；物体静止时受到的浮力大小是          N，被排开的水的体积是                  m³。（g取10N/kg）

化工生产中常常用到“三酸两碱”，“三酸”指硝酸、硫酸和盐酸，“两碱”指烧碱和纯碱。

(1)从物质的分类角度来看，不恰当的一种物质是_______。

(2)“三酸”与“两碱”之间均可反应，酸过量时若用化学方程式表示有六个，若用离子方程式表示却只有两个，请写出其中能产生气体的离子方程式为______________________。选取日常生活中常见物质由纯碱制烧碱的化学方程式为______________ 。

(3)“三酸”常用于溶解金属和金属氧化物。下列块状金属在常温时能全部溶于足量浓硝酸的是______。

A．Ag B．Cu C．Al D．Fe

(4)烧碱、纯碱均可吸收CO₂，当含0.1 mol NaOH的溶液吸收一定量CO₂后，将溶液低温蒸干得到固体的组成可能有四种情况，

①分别是：________；Na₂CO₃；__________；NaHCO₃。

②将得到的固体重新溶解于水，在溶液中加盐酸，使溶液中只含一种溶质，再将溶液蒸干，得到固体的物质的量是__________摩。