【正文】 asure of distance), for example, varied from just over 3 km in the north to nearly 6 km in the south.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. Now the International Bureau of Weights and Measures in Paris is set to give the metric system its biggest shakeup yet.s measurement bodies are almost certain to approve a decision that will mean four out of the seven base SI units, including the kilogram, will follow the other three, including the metre, in being redefined in terms of the values of physical constants (物理常數(shù)).Each of the chosen constants has been measured incredibly precisely, which would mean that from May 20th 2019 the constants will themselves be fixed at their current values for ever. Any laboratory in the world will then be able to measure, for example, the mass of an object as precisely as the accuracy of their equipment will allow.（1）What does Paragraph 1 mainly tell us? went before libra in measurement. things used to be adopted as measures. were accepted as measures by the Romans. measurement systems were gradually formed.（2）How does the author develop the second paragraph? time order. analysis. space order. parison.（3）Which of the following countries used SI as an official measurement? ....（4）What will the world39。 （1）考查推理判斷。故選B。根據(jù)第二段中的“The king39。故選D。根據(jù)第三段中的“it was the French who in 1799 made it law和The Syst232。Unit233。國(guó)際單位制是現(xiàn)時(shí)世界上最普遍采用的標(biāo)準(zhǔn)度量衡單位系統(tǒng)，采用十進(jìn)制進(jìn)位系統(tǒng)。 （4）考查細(xì)節(jié)理解。s measurement bodies are almost certain to approve a decision that will mean four out of the seven base SI units...will follow the other three...in being redefined in terms of the values of physical constants”可知，在法國(guó)凡爾賽宮召開(kāi)的會(huì)議上，七個(gè)基本計(jì)量單位中的四個(gè)將被重新定義，其中包括對(duì)千克的重新定義。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個(gè)題型的考查，是一篇科普類閱讀，考生需要準(zhǔn)確捕捉細(xì)節(jié)信息，同時(shí)根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。 ve got your aging brain to blame. This is likely due largely to the physical changes of our nerves and neurons (神經(jīng)元). New research suggests 39。 abilities of the young brain allow us to process more information during youth, causing the days to seem longer earlier in life. However, as we get old, researchers say the older brain takes more time to process information. Little babies, for example, move their eyes much more often than adults because they39。re happening more quickly.（1）What causes time to fly faster as we get old? A.Information in our brain.C.Rapid fire abilities.（2）What is unavoidable in the process of getting old? A.B.C.D.Young people are more energetic in their life.B.Old people have fewer things to do than young people.D.Nerves and NeuronsB.The Older, the FasterD. （1）考查細(xì)節(jié)理解。故選A。根據(jù)第一段中的You39。故選B。根據(jù)第一段中的最后兩句可知，年輕時(shí)之所以覺(jué)得日子似乎更長(zhǎng)是因?yàn)榇竽X能夠以“快速射擊”的方式處理更多信息。所以說(shuō)，相較于老年人，年輕人的大腦花費(fèi)更少的時(shí)間來(lái)處理信息。 （4）考查主旨大意。C項(xiàng)正好與主旨句呼應(yīng)，故選C。4．犇犇Choose the one that fits best according to the information given in the passage you have read. Flippers are a third of body length。 sawtoothed trailing edge on flukes, often raised when diving Body colour is dark brown to black。 such patterns enable individual recognition 270400 olive baleen platess, minke and blue whales. The big family migrate between winter tropical breeding areas (North West Shelf, Great Barrier Reef, New Caledonia, Vanuatu, Fiii, Tonga) and summer Antarctic feeding areas. Once mon in New Zealand waters, humpbacks are now rarely seen and may migrate further offshore. Males pete for mates either by physical fight or by song. Females give birth to their young every two to three years。 Similar species: Easily identifiable due to a 39。 back when submerging, but at a distance may be confused with other species that raise their flukes when diving, such as sperm, right and blue whales.Their long flippers vary in length, size and shape like dorsal fin.B.The different colors and patterns of the body help to be recognized.D.s description of humpback whales39。They need warmer waters to breed.B.t survive in extreme cold.C.They are mostly hunted in New Zealand waters.（3）This article is mainly intended toexplain why humpbacks are still hunted in some parts of the worldB.popularize the basic knowledge of humpbacks and call for protectionD. （1）考查推理判斷 。 often extensive white on flippers and underside of body and flukes。分析選項(xiàng)可知C項(xiàng)符合題意，故選C。根據(jù)第五個(gè)小黑點(diǎn)后面的The big family migrate between winter tropical breeding areas (North West Shelf, Great Barrier Reef, New Caledonia, Vanuatu, Fiii, Tonga) and summer Antarctic feeding areas. 座頭鯨這個(gè)大家族在冬季的熱帶繁殖區(qū)（西北大陸架、大堡礁、新喀里多尼亞、瓦努阿圖、斐濟(jì)、湯加）和夏季南極喂養(yǎng)區(qū)之間遷徙。冬季的熱帶繁殖區(qū)，是溫暖的地方。 （3）考查主旨大意。所以本文目的是普及有關(guān)座頭鯨的知識(shí)，并對(duì)它們加以保護(hù)。 【點(diǎn)評(píng)】本題考點(diǎn)涉及推理判斷和主旨大意三個(gè)題型的考查，是一篇科普類閱讀，要求考生根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。 Scientists have found what they believe are pieces of a meteor(流星)that fell to the earth last year. The objects were discovered off the coast of the United States in the Pacific Ocean. The search was launched after US government weather stations observed a large meteorite exploding some months ago. The explosion lit up the sky and sent the rock particles to the earth. The meteorite fall was the largest recorded over the United States in at least 20years. The team includes scientists from NASA, the Olympic Coast National Marine Sanctuary and the University of Washington. The scientists examined what they believe were two small meteorite fragments. Further testing is needed before they can confirm that the material came from the explosion. The objects recovered from the bottom of the sea likely came from the recent explosion for two main reasons. First, meteorite particles are basically made of glassy materials that do not tend to last long in seawater. Secondly, they came from what looked like a small hole on the seafloor. Some evidence shows tha