【正文】 ce, on November 16th, 2018, the world39。s measurement bodies achieve at the meeting held in Versailles? will e up with seven new SI units. will set May 20th as a new international festival. will redefine four SI units including the kilogram. will decide on a new measure used in the laboratory.【答案】 （1）B（2）D（3）A（4）C 【解析】【分析】本文是一篇說明文，法國凡爾賽宮舉辦的國際計量大會，將對目前使用的國際單位制中的四個基本單位進(jìn)行重新定義，其中包括對千克的重新定義。根據(jù)第一段中的“man has been the measure of many, if not all, things ”以及下文提到的用作計量單位的手、腳、谷物重量和參考角豆種子重量的磅可知，本段主要講述了不同的東西被用作計量單位。 （2）考查推理判斷。s foot ...around a centimetre shorter than the Belgic foot”和“Greek, Egyptian and Babylonian versions of water in a fixed container varied from one another by a few kilos,以及The lieue (former measure of distance), for example, varied from just over 3 km in the north to nearly 6 km in the south”可推知，本段作者主要運用了對比的寫作方法，把同一計量單位在不同國家之間或者在同一國家不同區(qū)域間的差異進(jìn)行了說明。 （3）考查細(xì)節(jié)理解。me International d39。s (SI, or the metric system, as it is better known)developed from it and became the official measurement in all countries except Myanmar, Liberia and the United States ”可知，在所給出的四個國家中，只有法國采用國際單位制(SI)。故選A。根據(jù)最后一段中的“At a meeting in Versailles, France, on November 16th, 2018, the world39。故選C。3．犇犇閱讀理解 we39。 “5G is one of those signs, along with artificial intelligence, of this ing data age,” said Steve Koenig, senior director of market research for the Consumer Technology Association. “The selfdriving vehicle is a great emblem of this data age, and that is to say, it is a sign of time, because with one single task, driving, you have massive amounts of data ing from the vehicle itself, and a variety of sensors are collecting a lot of information to model its environment as it moves. It39。s lots of data behind that task, which is why we need high speed.t yet broken the mainstream, but tech panies are joyfully betting that these devices will eventually replace our smartphones. With 5G, that could actually happen. This is notable because panies such as Apple are reportedly developing AR glasses to assist — or perhaps even replace — smartphones.s Mobile World Congress how smart glasses could bee faster and lighter with a 5G connection, because instead of being weighed down with ponents, the glasses could rely on hardware for processing power.t get too excited. There39。t concentrated only in big cities.（1）What does the author want to stress in Paragraph 1? A.The expectation of 5G world.C.The internetconnected devices in our life.（2）What does the underlined word emblem in Paragraph 2 mean? A.Success.C.Explanation.（3）We can infer from the text that ________. A.t e without AR glassesB.Apple pany is developing AR glasses worldwideD.How to fully expand 5G coverage.B.Why 5G isn39。The importance of infrastructure construction.【答案】 （1）A（2）C（3）D（4）A 【解析】【分析】本文是一篇說明文，介紹了我們離5G世界越來越近了。根據(jù)第一段中的“Slowly but surely, we39?？芍髡咴诘谝欢蜗霃娬{(diào)“5G光速快。 （2）考查詞義猜測。故選C。根據(jù)第三段中的“This is notable because panies such as Apple are reportedly developing AR glasses to assist — or perhaps even replace — smartphones.”這一點值得注意，因為據(jù)報道，蘋果(Apple)等公司正在開發(fā)增強現(xiàn)實眼鏡，以幫助——甚至取代——智能手機。故選D。根據(jù)最后一段中的“But don39。s still a lot of work to be done in the meantime, including various trials to make sure the radios play nicely with hardware and infrastructure construction so 5G isn39。與此同時，仍有很多工作要做，包括各種試驗，以確保收音機能很好地配合硬件和基礎(chǔ)設(shè)施建設(shè)，這樣5G就不會只集中在大城市。”故選A。4．犇犇閱讀下列短文，從每題所給的A、B、C和D四個選項中，選出最佳選項。 One spring day, once the flowers have begun to open, a bee will hover (盤旋) and zip through your yard and divebomb your piic table. While you39。 A honeybee has about six weeks to live. Today, like most days, her task is to fly as many as three miles from home, stick her long, strawlike tongue into a hundred or so flowers. When the bee has had her fill, shell fly home. There the bee will deposit what she has got into the mouth of one of her coworkers, who will relay it to another, and so on for about 20 minutes, until the mixture is ready to be placed into the b. Then she and her 50 000 or so mates will hover in the dark all night every night, flapping their wings to create hot, breezy conditions to remove the water from the mixture. Several sunrises later, they will seal me off in a golden cell of beeswax. In her lifetime, our bee may visit 4, 000 flowers, and yet will produce only onetwelfth of a tea spoon of me. Alas, my good health is not guaranteed. The problem lies in the growth of industrial agriculture and the use of pest control chemicals, as well as changes in weather patterns, all of which reduce the number of flowers bees have to visit I39。The flowerThe beeWaterHoney（2）What is the 2nd paragraph mainly about? A. special talentB. hard work.C. living environment.D. social behavior.（3）What is the purpose of the passage? A.To talk about the history of a treasure.C.To argue against the control of chemicals.【答案】 （1）D（2）B（3）A 【解析】【分析】本文是一篇說明文，用擬人的手法，以蜂蜜的口吻，介紹了蜜蜂雖然只有六周左右的壽命，但用其一生辛勤為人類釀造蜂蜜，人類應(yīng)該保護蜜蜂。根據(jù)第一段中的“While you39。 （2）考查主旨大意。 （3）考查推理判斷。 【點評】本題考點涉及代詞指代，推理判斷和主旨大意三個題型的考查，是一篇科普類閱讀，考生需要根據(jù)上下文進(jìn)行邏輯推理，概括歸納，從而選出正確答案。 Environmental experts warn that our planet is drowning in plastic.s cities produce 2 billion tons of trash every year. By the year 2050 that number is expected to rise to 3 billion tons. The World Bank estimates that the largest amount of trash today, about 44 percent, is plastic. But we often have to buy packaged goods. And often that packaging is made of plastic. Loop is the idea of Terra Cycle, an Americanbased recycling pany. Its chief, Tom Szaky told the Associated Press (AP) that removing plastics from the ocean is not enough. He said the point is to get away from singleuse packages. Szaky said that Loop is the