问题 单项选择题

金属基托要求厚度为

A.0.5~0.75mm
B.0.25~0.5mm
C.1~1.5mm
D.2.0mm
E.0.5mm

答案

参考答案:E

解析: 卡环臂进入倒凹一般为0.5~0.75mm,铸造卡环一般安放在倒凹区的深度为0.25~0.5mm,颌支托厚度一般为1~1.5mm,塑料基托一般要求厚度为2mm,金属基托要求厚度为0.5mm。

阅读理解

I can’t count how many times people have complained, while shaking their heads in obvious disappointment,“just don’t know what is with teenagers today.”

The other day I was in my car on my way to the farmers market when I passed two teens standing by the side of the road with a car washing sign. My car was filthy and my heart was full, so I pulled over. There was a group directing the cars and another group spraying them down. As sponges(海绵) were wiped over every square inch of my dirty car, I sat enjoying the little water bottles. I was amazed at why forty to fifty teenagers had devoted their Saturday to washing cars.

After I handed them a twenty-dollar bill I asked what they were raising money for. They explained to me that a friend of theirs, C.T.Schmitz, had recently died of cancer. He was only fifteen years old. He had gone to school with a lot of the teenagers who were there that day and each of them had memories of a boy sweeter than any they had known. His friend Kevin had decided to put this car wash together because he wanted to honor his friend and also bring together his classmates with his boy scout troop(童子军). He told me that they wanted to plant a tree in front of their school and if they raised enough money they would put a plaque(纪念匾) there also. Both would be in memory of their friend C.T.

They handed me a bag of homemade cookies with my receipt(收据) saying“Thanks for helping us plant a tree of C.T.”

Yeah! I don’t know what is with teenagers today!

小题1:From the passage we can know that the boys were raising money to ______.

A.buy a plaque for their school .

B.help those who suffered from cancer.

C.first plant a tree in memory of their friend.

D.put a plaque near their friend’s home小题2:From the passage, we can infer that C.T.Schmitz was _____.

A. kind-hearted but lonely          B. brave and popular with his classmates

C. shy and sensitive               D. a boy you can get a good impression of

小题3:What does the underlined word  “ filthy”mean?

A.new

B.dirty

C.good-looking

D.ordinary小题4:What would be the best title for the passage?

A.Teenagers Today

B.A Special Day

C.My view on Teenagers

D.An Exciting Experience

阅读理解与欣赏

阅读下文,完成1—4题。

乡间学校的敲钟人

张 蛰

  ①那是苏北乡间最普通的一所学校。我在那里度过了六年的中学时光,又在那里度过了最初六年的教书生涯,我人生最青涩也最灿烂的时光都交给了那所非常宁静的乡间学校。在我珍藏于心间的有关那所乡间学校的记忆里,王老师是无法抹掉的人。

  ②读中学的最后一年我才注意到了王老师的存在。他中等个,瘦瘦的,看上去很和气,总是慢条斯理地走路,不慌不忙地说话。他是学校打上课铃的人,每天总是拉着细细的线绳催我们起床、出操、上课,告诉我们下课、吃饭、熄灯。他的铃声一如他的说话,不紧不慢,节奏匀称。有时候,他还会在上课的铃声里笑着对急忙忙冲向教室的学生喊:“慢一点儿,别磕着!”

  ③后来,做老师的我常常与他面对面地说些家长里短的话,就看出了他独有的善良来,才知道他做的工作远不止打铃,还承担着学校很多的工作。那个时候,打铃表面上看着轻松,实则不然。这是一件要时时刻刻想着的事,每天从早晨六点钟的起床铃到晚上九点半的熄灯铃,一天要打26次,到点就得拉铃绳,容不得马虎,而且要天天如此,月月如此,年年如此。

  ④除了按时打铃,最常见的情形是他坐在教务处的油印机前印学生的讲义,手一推一抬一翻,再一推一抬一翻,周而复始,全校学生的讲义都要靠他一张一张地推出来。

  ⑤一年冬天下过一场大雪。午饭后我刚刚躺在宿舍的床上准备休息,门被敲响了,王老师在外面喊我的名字。我高声答应着,问他什么事。他说你有电话。打开门,王老师已顶着随风打脸的雪花在雪地上深一脚浅一脚地往回走了,我踩着他的脚印也深一脚浅一脚地走着。那时,学校只有一部手摇电话,每个老师有外来电话都是王老师到各个办公室去叫人,如果遇到非上班时间,他就要跑到老师的宿舍去找人。我的宿舍离教务处还算近,有两百多米远,多数老师的宿舍离教务处都有三四百米。那些年,王老师从未拒喊过一个老师,无论刮风下雨、酷暑寒夸,他都要找到人。

  ⑥这些工作王老师一直干到退休才算终了。那些年间,他的铃声接起来有多长呢?他那一推一抬一翻一张讲义的动作谁知道重复过多少遍?他喊过的电话谁还能记得?……在那所乡间学校里,他,就像一个守夜的人。

  ⑦离开那所学校数年后的一天,与先前的同事叙旧,不经意间就说到王老师,说他待人的真诚,说他干活的实在……恍惚间耳畔又传来那所乡间学校响起的铃声,不紧不慢,节奏匀称。(选自《时文热读》第3辑,有删改)

1.文中写了王老师的哪几件事情?请简要概括。

_____________________________________________________。

2.根据第⑤段画线语句,展开合理想像,写出我当时的心理活动(40个字左右)。

_____________________________________________________。

3.文章第⑥段中作者为什么说“他,就像一个守夜的人”?

_____________________________________________________。

4.阅读全文,简要分析文章结尾再次写到铃声有什么作用。

_____________________________________________________。