问题 单项选择题

操纵子调节系统属于哪种水平的调节()

A.复制水平

B.转录水平

C.反转录水平

D.翻译水平

E.翻译后水平

答案

参考答案:B

阅读理解与欣赏

阅读《签名》,回答下列问题。

签名

  在乔治的记忆中,父亲一直就是瘸着一条腿走路的,他的一切都平淡无奇。所以,乔治总是想,母亲怎么会和这样的一个人结婚呢?他总觉得,父亲那条瘸腿,带给自己的是耻辱。

  一次,市里举行中学生篮球赛。乔治是队里的主力,他找到母亲说出了自己的心愿:希望母亲能陪他同往。在赛场上,只要看到母亲的目光,他就能发挥出最好的水平。母亲笑了,说:“那当然。你就是不说,我和你父亲也会去的。”他听罢摇了摇头,说:“我不是说父亲,我只希望你去。”母亲很是惊奇,问这是为什么。他勉强地笑了笑,说:“我总认为,一个残疾人站在场边,会使得整个气氛变味儿。”母亲叹了一口气,说:“你是嫌弃你的父亲了?”父亲这时正好走过来,说:“这些天我得出差,有什么事,你们商量着去做就行了。”乔治舒了口气,说:“爸爸,祝你一路平安!”父亲慈爱地抚摸着他的头,说:“我祝你能赛出好的成绩!”

  比赛很快就结束了,乔治所在的队得了冠军,乔治为此立下了汗马功劳。在回家的路上,乔治很是兴奋地说个不停。母亲也很高兴.说:“要是你父亲知道了这个消息,他一定会放声高歌的。”乔治沉下了脸,说:“妈妈,我们现在不提他好不好?”母亲接受不了他的口气,尖叫起来,说:“你必须要告诉我这是为什么!”乔治满不在乎地笑了笑,说:“不为什么,就是不想在这时提到他。”母亲的脸色凝重起来,说:“孩子,这话我本来不想说,可是,我再隐瞒下去,很可能就会仿害到你的父亲。你知道你父亲的腿是怎么瘸的吗?”乔治摇了摇头,说:“我不知道。”母亲说:“那一年你才两岁父亲带你去公园玩儿,在回家的路上,你左奔右跑。忽然,一辆汽车疾驰而来,你父亲为了救你,左腿被碾在了轮下。”乔治顿时呆住了,说:“这怎么可能呢?”母亲说:“这怎么不可能!不过这些年你父亲不让我告诉你罢了。”

   两人慢慢地走着。母亲说:“有件事可能你还不知道,你父亲就是布莱特,你最喜欢的作家。”乔治惊讶地蹦了起来说:“你说什么?我不信!”母亲说:“这其实你父亲也不让我告诉你。你不信可以去问你的老师。”乔治把运动服塞在母亲的怀里说“你等着”,就急急地向学校跑去。

  老师面对他的疑问,笑了笑,说:“这都是真的,你父亲不让我们透露这些,是怕影响你的成长。但现在你既然知道了,那我就不妨告诉你,你父亲是一个伟大的人。”

  乔治激动得不能自已,一阵风地跑回家中,父亲却不在。两天以后父亲回来,一进门,乔治就急不可待地说:“爸爸,我问你一件事。”父亲放下手提包,说:“是不是又遇到了什么困难?”他摇了摇头,说:“爸爸,我只是想问你一句话。”父亲笑了,说:“别说一句,就是一百句也没问题。”乔治说:“你就是大名鼎晶的布莱特吗?”父亲愣了一下,然后就笑了,说:“孩子,你怎么想起了这个问题?”乔治制止他问下去,说:“你得先回答我。”父亲点了点头,说:“我就是写小说的布莱特。”乔治拿出一本书来,说:“你得先给我签个名吧!”父亲看了他片刻,然后拿起笔来,在扉页写道:“赠乔治,生活其实比什么都重要。布莱特。”然后放下笔,说:“我其实比签名更重要。”然后笑了起来。

  多年以后,乔治成为一名出色的记者。当有人让他介绍自己的成功之路时,他就会重复父亲的那句话:生活其实比什么都重要。

1.在文章中老师告诉乔治“你父亲是一个伟大的人”请仔细阅读全文,说说乔治的父亲有哪些伟大之处?(至少写出三点) 

                                                                                               

2.乔治参加中学生篮球赛,不想让父亲陪同的原因是什么? 

                                                                                               

3.听说父亲就是自己最喜欢的作家,乔治问父亲:“你就是大名鼎鼎的布莱特吗?”父亲回答说:“我就是写小说的布莱特。”请你仔细体味,说说这两句话的不同。 

                                                                                                

4.根据文章内容,说说乔治父亲写下的“生活其实比什么都重要”这句话的含义。

                                                                                                

阅读理解

阅读理解。

     You are seeing a film in which two men are having a fight. They hit one another over the heads with chairs.

And so it goes on until one of the men crashes through a window and falls thirty feet to the ground below. He

is dead!

     Of course he isn't really dead. With any luck he isn't even hurt. Why? Because the men who fall out of high

windows or jump from fast moving trains, who crash cars or even catch fire, are professionals. They do this

for a living. These men are called stuntmen (特技演员). That is to say, they perform tricks.

     They actually do most of the things you see on the screen. For example, they fall from a high building.

However, they do not fall onto hard ground but onto empty cardboard boxes covered with a mattress (床垫).

Again, when they hit one another with chairs, the chairs are made of soft wood and when they crash through

windows, the glass is made of sugar!

     But although their work depends on tricks of this sort, it also requires a high degree of skill and training.

Often a stuntman's success depends on careful timing. For example, when he is "blown up" in a battle scene,

he has to jump out of the way of the explosion just at the right moment.

     Naturally stuntmen are well paid for their work, but they lead dangerous lives. They sometimes get seriously

injured, and even killed. A Norwegian (挪威的) stuntman, for example, skied over the edge of a cliff a thousand

feet high. His parachute (降落伞) failed to open and he was killed.

     In spite of all the risks, this is no longer a profession for men only. Men no longer dress up as women to

perform some dangerous actions. For nowadays there are stunt girls, too.

1. What can be inferred from the author's example of the Norwegian stuntman? [ ]

A. Sometimes an accident can happen to a stuntman.

B. Parachutes must be of good quality.

C. The percentage of serious accidents is high.

D. The cliff was too high.

2. Stuntmen are those who _____. [ ]

A. often dress up as actors

B. like to lead dangerous lives

C. often perform seemingly dangerous actions

D. often fight each other for their lives

3. Stuntmen earn their living by _____. [ ]

A. playing their dirty tricks

B. selling their special (特别的) skills

C. jumping out of high windows

D. jumping from fast moving trains

4. When a stuntman falls from a high building, _____. [ ]

A. he needs little protection

B. he will be covered with a mattress

C. his life is in danger

D. his safety is generally all right

5. Which of the following is the main factor of a successful performance? [ ]

A. Strength.

B. Exactness.

C. Speed.

D. Carefulness.