填空题 {{B}}Directions:{{/B}} {{I}}In this section, you will hear a talk. Answer the questions below. You will hear the recording twice. At the end of the talk there will be a 3-minute pause, during which time you are asked to write down your answers briefly on the Answer Sheet. You now have 25 seconds to read the questions below.{{/I}}

填空题 For the purpose of making weather maps, information will be sent to______.

填空题 The establishment of the Weather Bureau was made possible by the invention of______.

填空题 People who send accurate information to Washington are 3,500______.

填空题 The number of distributing points for weather maps is______.

填空题 Generally, the forecasts should be delivered none later than______.