Summary of Text A, Unit 4Fill in the blanks with the words given below.Travel is 1_________ and sometimes even unpleasant; then what is the driving force behind our travel? We travel because we need to. Sometimes our travel is a 2____ because we should attend the business luncheon, because we should celebrate Thanksgiving with our mom. We travel because we want to. Owing to the fact that most travel is 3_______, we just travel following our heart. Most people travel for the sake of 4__________, but their mind tends to solve the stubborn 5___________ issues while on vacation. What is the real purpose of travel? Travelling to a new place can make us less controlled by familiar cognitive 6________ that imprison us. As a result, we can better combine the new with the old; the mundane is 7________ from a slightly more abstract perspective.To 8__________ travelers, multicultural contrast means that they are open to ambiguity and willing to see the world in different ways, thus to expand the 9______________ of their “cognitive inputs” as they refuse to 10__________ their first answers and initial guesses. Of course, that mental flexibility is a side effect of difference and we know what we did not know in the past, by which we become more open-minded and less 11_______.Apart from its advantages, travel also has its 12_________, which make us not take great pleasantness. More often than not, we need a 13_________ after our vacation. We travel because we need to, because distance and difference are the 14_____________ of creativity. Travel will change our mind to some extent, which in turn can have 15________ on everything in our life.relaxationburdensomeoptionalpatterns mustgraspeddomestic seasoned cornerstonescircumferencessettle for effectsinsular vacation drawbacks