Question

【題目】 Most of us have looked up at the stars that fill the night sky and wondered whether we’re alone in the universe. Indeed, the question of whether there’ s life out there has been something humankind ’s been asking itself for countless years. But thanks to China’s Five-hundred-meter Aperture Spherical Telescope (FAST), the answer to this question may come a lot sooner than we expected.

The telescope has a huge round reflector, which measures 500 meters across and has a perimeter（周長）of 1.6 kilometers. Because of its great size, it would have been both difficult and inefficient to get FAST to move like a regular telescope. Instead, FAST’s designers came up with a great solution: its surface is made up of 4450 panels which can be individually adjusted. This clever design feature allows scientists to detect radio signals from any angle with a great degree of accuracy. “Panels can change their positions through connected wires and parallel （關(guān)聯(lián)的） robots. We can control their position with an accuracy of 1 mm,” Zheng Yuanpeng, chief engineer of the telescope’s panel project, told Xinhua News Agency.

FAST’s engineers also had the task of finding a suitable location. As any interference would affect its ability to detect distant radio waves, it needed to be built in a remote area. Luckily, the perfect spot was found in the beautiful mountains of Guizhou Province. “There are three hills about 500 meters away from one another, creating a valley that is perfect to support the telescope," Sun Caihong, chief engineer of FAST’ s construction, told Xinhua.

And although it wasn’t yet fully operated, FAST had already made great discoveries by October 2017. Since 1967, only around 2000 pulsars （脈沖星） have been discovered, yet FAST had detected six more by October 2017. Once FAST is fully up and running, we may finally have the answer to one of the biggest questions in history.

【1】What is the purpose of mentioning the question in Paragraph 1?

A.To introduce the new giant telescope.

B.To explain why there is life in universe.

C.To remind readers to think about the life in space.

D.To emphasize the question that should be answered.

【2】What can we know from Paragraph 2?

A.The telescope is made up of many panels.

B.The area of FAST is about 800 square kilometers.

C.The engineer can handle FAST’s position accurately.

D.The individual panel helps scientists catch radio signals.

【3】Why was FAST built in Guizhou?

A.Because Guizhou is a remote province.

B.Because Guizhou has an ideal valley.

C.Because Guizhou has beautiful mountains.

D.Because Guizhou has the ability to build it.

【4】What does the last paragraph mainly talk about?

A.FAST’s timeline.B.FAST’s future.

C.FAST’s operation.D.FAST’s discoveries.

Answer 1

【答案】

【1】A

【2】D

【3】B

【4】D

【解析】

這是一篇說明文。文章介紹了中國500米口徑球面射電望遠鏡，它的設(shè)計原理、選址以及發(fā)展前景等多方面的信息。

【1】推理判斷題。文章第一段通過提出問題，再引出答案，在引出答案的同時引出了本文要介紹的我國500米口徑球面射電望遠鏡。所以第一段提出問題的目的是引出本文的介紹對象。這也是說明文常見的寫作手法。故選A。

【2】推理判斷題。由文中的“its surface is made up of 4450 panels which can be individually adjusted. This clever design feature allows scientists to detect radio signals from any angle with a great degree of accuracy.（它的表面由4500片可獨立調(diào)節(jié)的金屬板組成。這種聰明的設(shè)計可以讓科學家從不同的角度精確的探測到無線電信號。）”可推知，這些金屬板能幫助科學家捕捉無線電信號。故選D。

【3】推理判斷題。由文章第三段中的“There are three hills about 500 meters away from one another, creating a valley that is perfect to support the telescope（這兒有三座間距500米左右的山，是安置望遠鏡的絕佳的山谷）”可知，望遠鏡之所以安置在貴州，是因為貴州有一個很好的山谷。故選B。

【4】主旨大意題。由最后一段的首句“And although it wasn’t yet fully operated, FAST had already made great discoveries by October 2017.（雖然還沒有完全運轉(zhuǎn)起來，到2017年10月FAST已經(jīng)有了重大發(fā)現(xiàn)）”可知，這一段講述FAST的重大發(fā)現(xiàn)。并且其后幾句話也是來具體闡述FAST的重大發(fā)現(xiàn)的。故選D。

主旨大意題是篇章閱讀一個主要的考查方式，段落大意題是其中一種考查形式。段落大意題的主旨主要是要確定好段落中心句。說明文中，段落中心句有可能是段落第一句話，如果第二句話有轉(zhuǎn)折詞的話，第二句話就是中心句。確定好中心句后再將中心句的中心詞與答案對比，就可以得出答案。例如本題第四題，第四段首句就是含有轉(zhuǎn)折關(guān)系詞句子，所以主句就是段落中心句。其中的FAST及great discoveries就是關(guān)鍵詞，據(jù)此我們就可以確定答案為D。所以要破解主旨大意題，同學們首先要學會確定段落主旨句。