沥青路面施工前应对沥青拌和楼、（）、压路机等各种施工机械和设备进行（），对机械设备的

现有X 、Y 、Z 三种元素，其中X 原子核内只有一个质子：Y 原子L 层电子数是K 层电子数的2 倍；X 与Z 形成的   化合物的分子式为ZX₃ ，每个分子内有10 个电子。请回答卞   列问题： 

(1) 写出Z 元素的原子结构示意图__________ ；X 分别与Y 、Z 形成的化合物中，具有5 个原子核的微粒的化学式为___________ 。  

(2) 某些常见物质可用来合成新材料，如利用高温高压法使石墨转变为人造金刚石。科学家认为Y 、Z 元素能形成一种比金刚石更硬的化合物，后来人们在实验室成功合     成了含有这些元素的化合物（制作晶体薄膜材料），该化合物的化学式是__________ ；试推测合成这种化合物所需的条件是__________ 。

     You want to know about my staying in America, right? Well, to tell you the truth, it is really an

eye-opening experience study here.

      In China, I had English classes five times a week since fifth grade. However, I didn't know how

different textbook English could be from everyday English until I came to Hotchkiss School, Conmecticut.

     When I first studied English, I was told to say,"I am fine." when people say "How are you?" But in

the US, I found that people say, "I am good." or "I'm tired."

     One day, someone greeted me with "What's up?" It made me confused. I thought for a moment and

then smiled because I didn't know what to say.

     Since then, I have discovered more and more differences between Chinese and US cultures.

     To my surprise, US girls spend a lot of time in the burning sun to get a tan. However, in China, girls

try every possible way to get their skin paler, or "whiter."

      I also surprised by how hard-working.US students are. In China, schoolwork is almost everything,

so we study hard and that' it. But here, a "good" student gets good grades, does a lot for the public and

plays sports or music.

     The kids here are so talented, I am starting to be sorry that I gave up playing the piano at an early

age and that I have never thought about sports.

1. According to the writer, textbook English is _____ everyday English. [ ]

A. quite different from

B. the same as

C. more difficult than

2. What does the word "tan" in the sixth paragraph mean in Chinese?  [ ]

A. 晒黑

B. 晒白

C. 能量

3. A good US student spends his/her time _____. [ ]

A. only in doing homework

B. only on sports or music

C. on studies, sports or music and public work

4. Which of the following is NOT true? [ ]

A. The writer is now in US.

B. American girls love to have white skin.

C.US students are talented and hard-working.

5. Which is the best title for the passage?[ ]

A. My Own Travel in the US

B. My Studying in the US

C. My Opinion about the US

下列有关我国近代交通和通讯工具进步影响的说法，不正确的是 [ ]

A．客观上推动了中国经济和政治近代化的步伐     

B．促进了人口的流动和住处的交流

C．便利了列强进一步侵略中国                   

D．减缓了中国半殖民地化的进程

新鲜无移位或嵌插骨折固定多用（）。

A.持续骨牵引，持续时间较短

B.用“丁”字鞋维持固定

C.较大重量的皮肤牵引制动固定

D.采用三翼钉固定

E.夹板固定

以下哪种政策工具不属于强制型政策工具？（）

A.规制

B.直接提供

C.公共企业

D.家庭和社区