【正文】 The reason that some BIC174。 pens have a hole in their cap is to prevent the cap from pletely obstructing the airway if accidentally breathed in. This is requested by the international safety standards ISO11540, except for in cases where the cap is considered too large to be a choking risk. That39。s rather lovely of them. In appreciation of their want to not kill off their more clumsy customers, we thought we39。d share a few more random facts about Bic that are probably going to e up in a pub quiz one day. Did you know, for example, that each Bic ballpoint pen can produce at least 2 kilometers ( miles) of ink before it begins to run out? In fact, in 2018, 7,250 kilometers (4,505 miles) of writing tests on such pens were carried out on ballpoint pens, gel pens(中性筆), and rollers to make sure they worked to the highest standard. The best part of the Bic site, however, is this rather curious fact: 100 percent of pen balls are made through a highlycontrolled process. As opposed to a highly uncontrolled process, involving explosions and bouncy castles and total chaos, we suppose.（1）Why does the author mention the case of Yellowstone? A.To list the facts.B.To prove his point.C.To pare the two situations.D.To emphasize the importance of safety.（2）What does the underlined word obstructing in paragraph 2 mean? A.Block.B.Open.C.Transform.D.Narrow.（3）Why were the writing tests on pens carried out? A.To work out their lifespan.B.To assure their good quality.C.To prove some random facts.D.To pare different pens with each other.（4）In what tone does the author develop the text? A.Critical.B.Acid.C.Humorous.D.Serious.【答案】 （1）B（2）A（3）B（4）C 【解析】【分析】本文是一篇說明文，畢克筆的筆帽上有一個小孔是為了防止那些粗心的使用者不小心吞下而窒息死亡。這真是粗心使用者的生命通道。 （1）考查推理判斷。畢克筆的筆帽上留一個小孔的原因，且這個問題會被偶爾問到，就像如果你用核武器攻擊黃石公園會發(fā)生什么事這個問題一樣，作者是在舉例證明他的觀點，故選B。 （2）考查詞義猜測。此處意為當使用者不慎把筆帽吞下時，筆帽上的小孔就是為了阻止筆帽完全阻塞氣管而引起窒息，故選A。 （3）考查細節(jié)理解。根據(jù)第三段中的In fact, in 2018, 7,250 kilometers (4,505 miles) of writing tests on such pens were carried out on ballpoint pens, gel pens(中性筆), and rollers to make sure they worked to the highest standard.可知，舉行書寫測試的目的是為了確保筆能夠達到最高的標準，故選B。 （4）考查推理判斷。根據(jù)第一段中的Some things should just be mon knowledge by now. The Earth isn39。t flat. Nope, your hair and nails don39。t grow after you die. 和第三段中的That39。s rather lovely of them. In appreciation of their want to not kill off their more clumsy customers等作者的行文措辭可知，作者筆調(diào)輕松幽默，故選C。 【點評】本題考點涉及細節(jié)理解，詞義猜測和推理判斷三個題型的考查，是一篇科普類閱讀，考生需要準確捕捉細節(jié)信息，并根據(jù)上下文進行邏輯推理，從而選出正確答案。7．閱讀理解 When it es to modern munication, security is a big concern. It seems like we39。re forever hearing about hackers leaking(泄露) s, passwords and other important personal information. But thanks to a breakthrough by Chinese scientists, who won the 2018 Newb Cleveland Prize in February, we may soon never have to worry about our data again. This is thanks to the satellite called Micius that uses cuttingedge technology to send and receive information. Micius is the first satellite of its kind to use quantum key distribution(量子密匙分發(fā)), which uses particles (粒子) that transmit(傳輸) light to transfer information from one point to another. Currently, it can municate with two base stations(基站), both of which are located high up in the mountains in two different areas of Tibet, around 1,200 kilometers apart. Data is sent between the satellite and one of the base stations in the form of a ray of light. This makes it almost impossible for data sent and received using quantum satellite technology to be stolen, as the connection will be broken if someone tries to hack it. Any eavesdropper(偷聽者) on the quantum channel attempting to gain information … can be found by the municating users, the scientists wrote in the paper. However, the technology does have a few limitations. For example, the process only works at night, as the information isn39。t able to pass through sunlight. Despite these small issues, the scientific munity across the world has reacted positively to China39。s achievements in this groundbreaking project. This Chinese experiment is a quite remarkable technological achievement, Artur Ekert, a professor of quantum physics at the University of Oxford, told BBC News. And Karl Ziemelis, an editor for Nature, told Xinhua, It39。s a testament(見證)to China39。s investments and significant efforts in the physical sciences that this group has been able to push research in practical quantum munication technologies to such an astronomical(天文學的)height.（1）According to the passage, why Micius is safe for transporting messages? A.Because it is only data base located in space, which cannot be touched.B.Because it only works at night, as the information isn39。t able to pass through sunlight.C.Because it uses particles that transmit light to transfer information from one to another.D.Because it doesn39。t score any important private information like passwords and s.（2）Which of the following can best describe scientists39。 words in the paper? A.It gave out the working principle of Micius.B.It tells o