问题 填空题

密封铆接应在密封剂的()内铆接。

答案

参考答案:施工期

阅读理解与欣赏

阅读下面文字,完成小题。

M31以外是另一个非常相似的星系,也就是我们自己的星系。它的旋涡臂缓慢地转动着——每2亿5千万年旋转一周。现在,我们离地球4万光年,我们正处于密集的银河中心。但是,假如我们希望找到地球的话,就必须将方向扭转到银河系的边远地带,扭转到接近遥远的旋涡臂边缘的模糊的地方。

我们印象最深刻的是,恒星即使在两个旋臂之间,也像流水一样漂浮在我们的四周——气势磅礴的自身发光的星球,有些虽然象肥皂泡一样脆弱,却又大得可以容得下1万个太阳或1万亿个地球;有些小如一座城池,但密度却比铅大100万亿倍。有些恒星跟太阳一样是孤独的;多数恒星有伴侣,通常是成双成对,互相环绕。但是那些星团不断地从三星系逐渐转化成由数十个恒星组成的松散的星团,再转化成由百万个恒星组成的璀璨夺目的大球状星团。有些双星紧靠在一起,星体物质在他们之间川流不息,多数双星都象木星与太阳一样分离开来。有些恒星——超新星——的亮度跟它们所在的整个星系的亮度一样;有些恒星——黑洞——在几公里以外就看不见了。有些恒星的光彩长年不减;有些恒星闪烁不定,或以匀称的节奏闪烁着。有些恒星稳重端庄地转动着,有些恒星狂热地旋转着,弄得自己面貌全非,成了扁圆形。多数恒星主要是以可见光或红外光放出光芒;其他恒星也是X光或射电波的光源。发蓝光的恒星是年青的星,会发热;发黄光的恒星是常见的星,它们已经到了中年;发红光的恒星常常是垂亡的老年星;而发白光或黑光的恒星则已奄奄一息。银河里大约有4千亿个各种各样的恒星,它们的运转既复杂又巧妙。对于所有这些恒星,地球上的居民到目前为止比较了解的却只有一个。

小题1:“M31以外是另一个非常相似的星系,也就是我们自已的星系”“对于所有这些恒星,地球上的居民到目前为止比较了解的却只有一个”两句中“自已的星系”和“只有一个”分别是指(   )

A.太阳系和太阳

B.银河系和太阳

C.太阳系和地球

D.银河系和地球小题2:下列对地球在太空中位置的解说,不正确的一项是(   )

A.地球处在距离银河系中心4万光年的地方。

B.地球处在银河系的边远地带。

C球处在距离漩涡臂比较遥远的地方。

D.因为地球距银河中心比较远,所以在银河中心看它是模糊的。

小题3:下列依据原文相关信息所作的解说,正确的一项是(   )

A.大恒星脆弱,密度小;小恒星则密度大,坚强。

B.多数恒星都有作为自己伴侣的恒星,它们通常成双成对,互相环绕,紧靠在一起。

C.太阳发的是黄光,说明它已到了中年;月光发的是白光,说明它已奄奄一息。

D.我们对银河系内的4000亿个左右的恒星,比较了解的只有一个,其他的都是一般了解或根本不了解。

阅读理解

A tall figure appeared from the dark door of the tent. It was a smoking young man about twenty three or four. He had an almost black face, though smooth. His moustache was black with curled points. There was an unusual force in his face, and in his daring rolling eyes. cef

  Rebecca still stood hesitating like a swimmer about to make his dive, hardly knowing whether to return or move forward.

"Hi, my beauty, what can I do for you?" said he, approaching. Realizing that she was quite at a loss, the man spoke in a gentle voice, "Never mind. I am Mr. Thackeray. Have you come to see me or my mother?"

  This scene differed greatly from what Rebecca had expected. She had dreamed of an aged and dignified(威严的) face. She told herself to be calm and answered "I came to see your mother, sir."

  "I am afraid you cannot see her-she is ill in bed," replied the representative of the house; for this was Mr. Alee Thackeray, the only son of the noble family. "What is the business you wish to see her about?"

  "It isn't business-it is-I can hardly say what!"

  "Pleasure?"

  "Oh no. Why, sir, if I tell you, it will seem..."

  Rebecca's sense of a certain ridicule(奚落,讥笑) was now so obvious and strong that, despite her general discomfort at being here, her rosy lips curved(弯曲) towards a smile, much to the attraction of the young man.

  "It is so foolish", she murmured. "I fear I can't tell you!"

  "Never mind; I like foolish things. Try again, my dear," said he kindly.

  "Mother told me to come," Rebecca continued; "and, indeed, I was in the mind to do so myself. But I did not expect it would turn out like this. I came…sir, I came to tell you that we are of the same family as you."

  "Ho Ho! Poor relations?"

  "Yes."

  "Rossetti?"

  "No. Thackeray."

  "Ay, ay; I mean Thackeray."

  "Our names are worn away to Durbeyfield; but we have several proofs that we are Thackeray. The local scholars hold the view that we are, and...and we have an old seal and a silver spoon marked with the same castle as yours. So mother said we ought to make ourselves known to you, as we've lost our horse by a bad accident. We can hardly make a living."

"It’s very kind of your mother, I'm sure." Alec looked at Rebecca as he spoke, in a way that made her uneasy. "And so, my pretty girl, you've come on a friendly visit to us, as relations?"

  "I suppose I have," looking less confident and uncomfortable again.

"Well, there's no harm in it. I mean it doesn’t hurt to come and make yourself known to me. Where do you live? What are you?" …

小题1:While meeting with Alec, Rebecca feels _______during the whole course.

A.nervous and uneasy

B.excited and hopeful

C.amazed and comfortable

D.pleased but embarrassed.小题2:Which of the following is suitable to describe Rebecca’s impression of Alec?

A.unfriendly and ta lkative

B.forceful and daring

C.gentle and reliable

D.older than expected小题3:What is Rebecca’s real purpose of making this visit?

A.To see Alec himself.

B.To see Alec's mother.

C.To confirm that they are of the same family.

D.To make known their relationship and seek help.小题4:From the passage, we can conclude that Alec appears quite friendly to Rebecca largely because __________.

A.Rebecca is his distant relation

B.Rebecca looks polite to him

C.Rebecca is a pretty girl

D.Rebecca looks ridiculous