在建设工程进度控制计划体系中，用来明确各种设计文件交付日期、主要设备交货日期、施工单

函数y =ax²(a≠0)与直线y =2x－3的图像交于点（1，b）．

求：（1）a和b的值；

（2）求抛物线y =ax²的开口方向、对称轴、顶点坐标。

（14分）某高聚物的单体A（C₁₁H₁₂O₂）可发生以下变化：

已知： C的烃基部分被取代生成的一氯代物D有两种；F的分子式为C₇H₈O，含有苯环，但与FeCl₃溶液不显色。请回答：

（1）F分子中含有的官能团结构简式是                 。

（2）由A生成B和F的反应类型为（选填序号）__       __。

①氧化反应      ②取代反应    ③水解反应      ④消去反应

（3）B的结构简式是____               。

（4）分子式为C₇H₈O，含有苯环的同分异构体除F外还有__     __种。

（5）写出下列方程式

① 由A生成B和F ______        ;  ② B → C ______                    ;

③A在一定条件下生成高聚物 ______                                   __。

阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。

B

Every man wants his son to be somewhat of a clone, not in features but in footsteps. As he grows you also age, and your ambitions become more unachievable. You begin to realize that your boy, in your footsteps, could probably accomplish what you hoped for. But footsteps can be muddied and they can go off in different directions.

My son Jody has hated school since day one in kindergarten. Science projects waited until the last moment. Book reports weren’t written until the final threat.

I’ve been a newspaperman all my adult life. My daughter is a university graduate working toward her master’s degree in English. But Jody? When he entered the tenth grade he became a “vo-tech” student(技校学生). They’re called “motorheads” by the rest of the student body.

When a secretary in my office first called him “motorhead”, I was shocked. “Hey, he’s a good kid,” I wanted to say. “And smart, really.”

I learned later that motorheads are, indeed, different. They usually have dirty hands and wear dirty work clothes. And they don’t often make school honor rolls(光荣榜).

But being the parent of a motorhead is itself an experience in education. We who labor in clean shirts in offices don’t have the abilities that motorheads have. I began to learn this when I had my car crashed. The cost to repair it was estimated at $800. “Hey, I can fix it,” said Jody. I doubted it , but let him go ahead, for I had nothing to lose.

My son ,with other motorheads, fixed the car. They got parts(零件）from a junkyard, non-toasting toaster have been fixed. Neighbours and co-workers trust their car repair to him.

Since that first repair job, a broken air-conditioner, a non-functioning washer and a non-toasting toaster have been fixed. Neighbors and co-workers trust their car repairs to him.

These kids are happiest when doing repairs. They joke and laugh and are living in their own relaxed world. And their minds are bright despite their dirty hands and clothes.

I have learned a lot from my motorhead: publishers need printers, engineers need mechanics, and architects need builders. Most important, I have learned that fathers don’t need clones in footsteps or anywhere else.

My son may never make the school honor roll. But he made mine.

In the author’s eyes, motorheads are（）.

A. tidy and hardworking

B. cheerful and smart

C. lazy but bright

D. relaxed but rude

滋补性食物可分为温热性、寒凉性、平性三类。在下列动物性原料中，属于平性食物的是（）。

A、鲫鱼

B、鸭肉

C、鳝鱼

D、牛肉

就配煤准确性而言，下列配煤方式最准确的是（）。

A.人工跑盘

B.核子秤配煤

C.电子秤配煤