1. (2019高三上·天门开学考) 阅读理解

    Throughout much of human history, man has been the measure of many, if not all, things. Lengths were divided up into feet and smaller units from the human hand. Other measures were equally characteristic. Mediterranean traders for centuries used the weight of grains of wheat to define (定义) their units of mass. The Romans used libra, forerunner of the pound, by referring to the weight of a carob (角豆树) seed.

    The sizes of similarly named units could also differ. The king's foot, used in France for nearly

    1,000 years after its introduction by Charlemagne in around 790 AD, was, at 32.5cm,around a centimeter shorter than the Belgic foot, used in England until 1300.Greek,Egyptian and Babylonian versions of water in a fixed container varied from one another by a few kilos, Nor was there agreement on such things within countries. In France, where there was no unified (统一的) measurement system at the national level, the situation was particularly terrible. The lieue (former measure of distance), for example, varied from just over 3 km in the north to nearly 6 km in the south.

    Although John Wilkins, an Englishman, first put forward a decimal system (十进制) of measurement in 1668,it was the French who in 1799 made it law. The Système International d'Unités (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 shake-up yet.

    At a meeting in Versailles, France, on November 16th,2018,the world'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 (物理常数).Each of the chosen constants has been measured incredibly precisely, which would mean that from May 20^th 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. （1） What does Paragraph 1 mainly tell us?

   A . Pound went before libra in measurement. B . Different things used to be adopted as measures. C . Grains were accepted as measures by the Romans. D . Fixed measurement systems were gradually formed.
3. （2） How does the author develop the second paragraph?

   A . In time order. B . By analysis. C . In space order. D . By comparison.
5. （3） Which of the following countries used SI as an official measurement?

   A . France. B . Liberia. C . America. D . Myanmar.
7. （4） What will the world's measurement bodies achieve at the meeting held in Versailles?

   A . They will come up with seven new SI units. B . They will set May 20th as a new international festival. C . They will redefine four SI units including the kilogram. D . They will decide on a new measure used in the laboratory.