6.So impressive was this invention,so difficult was it to exceed this speed limit, essive:adj.making a deep imp mthe past fow vear Chinee athid impresive achevements in competitive sports. This is an impressive building combining both the Chinese and western architectural styles. (2)Meaning:this invention was so impressive and it is so difficult to exceed this speed lin mit tha Inversion is used in this sentence to emphasize the two adjectives"impressive and "difficult". 7.The first steam locomotive,introduced in 1825,could have a top speed of only thirteen mph and the great sailing ships of the time labored along at less than half that &Mateshlpaetro A:It refers to the top speed of the first steam locomotive of thirteen mph 8.It took only fifty-eight years,however,to go four times that fast,so that by 1938 men in airplanes were traveling at better than 400 mph. Q:What does "that fast er to? A:It refers to the speed of a more advanced steam locomotive in the 1880'sof 100 mph. 9.Whether we examine distances traveled,altitudes reached,or minerals mined,the same accelerative trend is obvious Meaning In the Paragraphs from the third oe to the.the author examne the avan 6000 BC Cto the sapceships toda s is quickening in recent years.if we examine the heights we reached,or the amount of minerals we dug out from the earth at different times,we can see the quickening trend. 9.The pattern,here and in a thousand other statistical series,is absolutely clear and mmistakabla (1Q:What does"pattern"refer to? A:It refers to "the accelerative trend" (2)Meaning:The accelerative trend as shown here and in many,many other series of statistical figures is absolutely clear and unmistakable. 10.Thousands of years go by,and then,in our own times,a sudden bursting of the imits,a fantastic spurt forward Meaning:Thousands of years have passes,during which progress in technology has been slow or insignificant,and then,all of sudden,in our own times,the limits (of speed,flying altitude,etc.)have been broken,and man has made a big leap forward in technology. 11.The reason for this is that technology feeds on itself (1)feed on 1)take as food E.g.Lu Xun once said,"Cows feed on grass but what they produce is milk." 2)become nourished or strengthened from:get support from6. So impressive was this invention, so difficult was it to exceed this speed limit, (1) impressive: adj. making a deep impression on sb. E.g. In the past few years Chinese athletes have made impressive achievements in competitive sports. This is an impressive building combining both the Chinese and western architectural styles. (2) Meaning: this invention was so impressive and it is so difficult to exceed this speed limit that... Inversion is used in this sentence to emphasize the two adjectives "impressive" and "difficult". 7. The first steam locomotive, introduced in 1825, could have a top speed of only thirteen mph and the great sailing ships of the time labored along at less than half that speed. Q: What does "that speed" refer to ? A: It refers to the top speed of the first steam locomotive of thirteen mph. 8. It took only fifty-eight years, however, to go four times that fast, so that by 1938 men in airplanes were traveling at better than 400 mph. Q: What does “that fast” refer to? A: It refers to the speed of a more advanced steam locomotive in the 1880’s of 100 mph. 9. Whether we examine distances traveled, altitudes reached, or minerals mined, the same accelerative trend is obvious. Meaning: In the Paragraphs from the third one to the fifth one, the author examine the progress in transportation from the camel caravan in 6000 BC to the sapceships today. In this examination, one trend is obvious, that is, the rate of progress is quickening in recent years, if we examine the heights we reached, or the amount of minerals we dug out from the earth at different times, we can see the quickening trend. 9. The pattern, here and in a thousand other statistical series, is absolutely clear and unmistakable. (1) Q: What does "pattern" refer to? A: It refers to "the accelerative trend". (2) Meaning: The accelerative trend as shown here and in many , many other series of statistical figures is absolutely clear and unmistakable. 10. Thousands of years go by, and then, in our own times, a sudden bursting of the limits, a fantastic spurt forward. Meaning: Thousands of years have passes, during which progress in technology has been slow or insignificant, and then, all of sudden, in our own times, the limits (of speed, flying altitude, etc.) have been broken, and man has made a big leap forward in technology. 11. The reason for this is that technology feeds on itself. (1) feed on 1) take as food E.g. Lu Xun once said, "Cows feed on grass but what they produce is milk." 2) become nourished or strengthened from; get support from