文章大意:本文主要介绍了近期电视剧《三体》中的一段情节——古筝行动。为了找到一艘巨型船的重要信息,人们计划将其切成碎片。他们在河上设置了许多由高科技制成的细绳,看起来像古筝一样,这些细绳悄悄地将钢船切成了碎片,就像船是软豆腐一样。
Have you watched the recent TV Three-Body? Changed by Liu Cixin’s science book The Three-Body Problem, the show is very popular with people. One of the most exciting parts must be Operation Guzheng.
In order to find the important information of a huge ship, people plan to cut the ship into pieces. They set up many thin strings (线) across the river, the strings quietly cut the steel ship into pieces as if the ship was soft tofu!
Is it possible to cut ships with thin strings in real life? In fact, strings are very good at cutting. For example, the egg cutting machine uses thin strings to cut eggs into pieces. A kite line can easily hurt people if it gets circle around their necks. This is because the thin strings have a very small contact area(压强) when they cut things.
In the program, the strings are as thin as human hair. To cut the ship, the pressure needs to be 200 MPa. How strong is that pressure? Imagine an elephant standing on a string! In real life, scientists won’t be able to make such thin strings that wouldn’t easily break, at least for years to come. The cutting will also create lots of heat. We don’t have the things to bear.(忍耐)
27. What is the purpose of
Operation Guzheng in the program?
A.To find a huge ship. |
B.To cut the ship into pieces. |
C.To get important information. |
D.To turn the ship into soft tofu. |
28. How does the writer tell us “strings are very good at cutting”?
A.By telling stories. |
B.By giving examples. |
C.By showing numbers. |
D.By explaining rules. |
29. What does the underlined sentence in Paragraph 4 want to tell us?
A.Making thin strings is easy. |
B.People break strings with machines. |
C.Cutting things must use strings. |
D.People need strong pressure to cut ships. |
30. Which part of the newspaper may this passage be taken from?
A.Science &Technology. |
B.Sports &Games. |
C.Music &Fashion. |
D.Culture &Nature. |