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Extended Activities Part III Book 4Unit 1 Dictation Read More Grammar and Vocabulary Translation Writing Reading for Interest Cultural Information Extended Activities Book 4Unit 1 Return to Menu Who said packaging is everything? I think the present enthusiasm for packaging often brings us more trouble than convenience. We could save time, trouble and space if there wasn39。t so much variation in the size and shape of the packages. Suitcases, for example, should be made in standard sizes. There should be just four. For advertising purposes the makers could label them HUGE, GIANT, LARGE and REGULAR. Huge would be a big suitcase. Giant would be a normal size. Large would be small and Regular would be a small bag used for personal items you want to keep with you on a trip. If suitcases were made in only four standard sizes, we could save fifty percent of the space they now take up in airplane luggage partments. At home we could have whole closets of space and the predictably shaped suitcases would make packing a pleasure. Book 4Unit 1 Script There are many explanations for why UFOs visit the Earth. / The most popular one is that they may contain visitors from other plas./ To fly such an aircraft, their builders must develop different forms of aviation,/because they seem to fly much faster than normal aircraft./ The UFOs, it is even believed, must contain scientists/ from other plas who are studying life on earth./ It is even believed that several such aircraft may have landed on earth/ and the space visitors may be living among us./ But there are also less fantastic explanations available./ Although some sightings of UFOs are difficult to explain, most can be explained quite easily./ In many cases the observers might have made a mistake./ They might have seen a weather balloon or an