问题 单项选择题

用( )做胶凝材料制成的水磨石板的光泽度高、花纹耐久、抗风化性、耐火性与防潮性等效果更好。

A.普通水泥
B.高铝水泥
C.硅酸盐水泥
D.矿渣硅酸盐水泥

答案

参考答案:B

解析: 用高铝水泥做胶凝材料制成的水磨石板的光泽度高、花纹耐久,抗风化性、耐火性与防潮性等更好,原因在于高铝水泥水化生成的氢氧化铝胶体,与光滑的模板表面接触时形成氢氧化铝凝胶层,在水泥硬化过程中,这些氢氧化铝胶体不断填充于骨料的毛细孔隙中,形成致密结构,因而表面光滑、有光泽、呈半透明状。

单项选择题 A1/A2型题
阅读理解

People are different. Some are extrovert. These people are outgoing, confident, and know the “gift of the gab”. They also feel very comfortable when in groups of people.

Unfortunately we have the other extreme. This is the introvert. The introvert feels sick in crowds, and does not like them. These people feel awkward in the crowds, when placed in this type of situation. Many introverts are shy and lack confidence. They need to get used to people, and want to run away when questioned by people.

The introvert feels very lonely in a crowd, but this could happen to the outgoing  as well.

I think that I fall into the middle of the two kinds. Sometimes if I am comfortable about the type of people in the crowds, I feel welcome. If for some reason the crowd consists of different types of people, then I do not feel very comfortable in the crowd.

So what do I do when I suddenly feel lost and alone in the crowd? I try to calm my mind by taking deep breath and telling myself that even this will pass. I then try, and get away from the crowd by making excuses or even trying to get to my car and go home. This, of course, is a poor excuse and doesn’t often work well. These are excuses that are employed. The ones that I am not so proud of are acting like I have an emergency to go to. This is a very good lie, but I feel really bad afterwards.

I have tried this one, and have succeeded. I try and find someone who feels just like I do. I then try and make a new friend. Sometimes this works and sometimes it does not. This is quite a noble way of staying in the crowd.

小题1:What is the best title of the passage?

A.What is the character of the introvert?

B.Why do people feel lonely in a crowd?

C.How can we make ourselves calm down in a crowd?

D.What do you do when you suddenly feel lonely in a crowd?小题2:The word “extrovert” is most likely to mean ______.

A.serious

B.excited

C.outgoing

D.nervous小题3:From the fourth paragraph we can infer that _____.

A.the writer is good at getting along with others

B.the writer does not like to deal with people from other regions

C.the writer sometimes does not feel very comfortable in the crowd

D.the writer has double personality when faced with different types of people小题4:When the writer feels lonely, he prefers to calm down by _____.

A.making a call

B.making excuses

C.holding his breath

D.deep breathing