表示一个城市一个月气温的变化情况，最好运用（ ） A．统计表 B．条形统计图 C．折线

阅读理解。

     How many people have I met who have told me about the book they have been planning to write but

have never yet found the time? Far too many.

     This is life, all right, but we do treat it like a rehearsal (排演) and, unhappily. we do miss so many of its

best moments.

     We take johs to stay alive and provide homes for our families always making ourselves believe that this

style of life is merely a temporary (暂时的) state of affairs along the road to what we really want to do. Then,

at 60 or 65, we are suddenly presented with a clock and several grandchildren and we look back and realize

that all those years waiting for real life to come along were in fact real life.

     In America they have a saying much laughed at by the English: "Have a nice day." They speak slowly and

seriously in their shops, hotels and sandwich bars. I think it is a wonderful phrase, reminding us, in effect, to

enjoy the moment.

     How often do we say to ourselves, "I'll take up horse-riding (or golf, or sailing) when I get a higher

position," only to do none of those things when I do get the higher position.

     When I first became a reporter I knew a man who gave up a very well paid respectahle job at The Daily

Telegraph to go and work for a small weekly newspaper. At the time I was astonished by what appeared to

me to be his completely abnormal (反常的) mental state. How could anyone turn his back on Fleet Street in

central London for a small local area? I wanted to know.

     Now I am a little older and possibly wiser, I see the sense in it. In Fleet Street the man was under

continual pressure. He lived in an unattractive London suburb and he spent much of his life sitting on Southern

Region trains.

1. The underlined phrase "turn his back on" most prohably means "________".

A. give up

B. keep on

C. try out

D. look for

2. The man preferred working for a small newspaper partly because ________.

A. something had gone wrong with his mind

B. he wanted to have more time to enjoy life

C. he would have more chances to make money

D. he liked travelling on Southern Region trains

3. What is probably the best title for the passage?

A. Find a Good Job

B. Wait for Real Life

C. Value This Very Day

D. Get a Higher Position

为测定 FeO 和 Fe₂O₃ 固体混合物中 Fe元素的含量，可用氢气还原一定质量的此混合物并测定生成水的质量的方法来完成。若在实验室中选用下列实验装置来实现上述目的（图中夹持装置已略去，部分装置可重复使用）。请填空：

⑴仪器X的名称是                    。

⑵写出A中发生反应的离子方程式                                      ，

实验前如何检验装置A的气密性                                      。

⑶下图所示装置中与A装置具有相同作用的是              （填装置编号）。

⑷按正确的实验设计，所连接的装置顺序为：A→C→     →     →      。

⑸若FeO和Fe₂O₃混合物的质量为 ag，反应完全后生成水的质量为 b g，则混合物中Fe元素的质量分数为                 （用含字母的数学式表示）。

变异型心绞痛使用（）

A.β受体阻滞剂

B.钙拮抗剂

C.硝酸酯类

D.多巴胺

E.ACEI

DCH信道分配不成功最主要的原因在（）.

A、SGSN

B、PCU

C、GGCN

D、BTS

矿山冒顶片帮不属于坍塌事故。