题目内容
Read the passage and fill in the blanks with proper words(在短文的空格内填入适当的词,使其内容通顺,每空格限填一词,首字母已给)
When we are travelling alone on a ship or a plane at night or in fog, we are much happier if we know that the captain of the ship, or the pilot of the plane,(1)k where rocks or mountain tops are, so that he can keep away from them.
Until the Second World War, travellers could not have this feeling of(2)s , because there was no ways of “seeing” dangers through fog or cloud. But now there is “radar”, a wonderful wartime(3)i , by which the lives of many thousands, both in war and in(4)p , have been saved.
On the radar screen(荧屏) we can “see” all around us. The captain of a ship can find his way(5)b rocks and other ships, and the soldiers guarding a town can see enemy planes hundreds of miles away, and follow them as they fly near, perhaps from many different directions at once.
That is radar, one of the wonders of modern science, which is making(6)t and trade between nations easier and safer.
解析:
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knows; safety; invention; peace; between; travel |