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Gupy Simulado httpsprimeiraescolhagupy2azurewebsitesnetexameaspx01 t67574 00 44 30s Total time test 004500 PAUSE END TEST Question 1 of 12 Why do we sleep Pythons bats and giant armadillos are among the longest sleepers at over 18 hours a day Human babies need 16 hours and most of us probably feel we need around eight hours sleep to function well Professor Jerry Seigel from the University of California Los Angeles conducted a study of the sleep times of a broad range of animals and found that they vary widely Some like migrating birds can survive long periods without sleeping at all He believes that shows sleep evolved to conserve energy Jerry Seigel Its animals that are needlessly active that will not survive but animals that are most efficient and use their waking time to do vital functions and are otherwise asleep that will survive Sleep helps make best use of limited resources In humans when were awake our brain accounts for 20 of the energy we use when just sitting around Sleeping also makes us less likely to get injured and less likely to be detected by predators httpwwwbbccoukworldservicelearningenglishlanguagewordsinthenews200909090911witnsleepshtml Human babies need 16 hours and most of us probably feel we need around eight hours sleep to function well The use of the Simple Present in this sentence can be explained as follows Suggested time for this question 0600 05 56 A situation that started in the past and continues up to the present A situation that is going on now 1 of2 01042023 2009 A situation that reveals a state or habit A situation that happened in the past A situation that will happen in the near future SAVE SKIP THIS QUESTION BBRROOW WSSEE TTHHEE QQUUEESSTTIIOONNSS Guppy All rights reserved 1 2 exameaspxo2t675748605 3 exameaspxo3t675748605 4 exameaspxo4t675748605 5 exameaspxo5t675748605 6 exameaspxo6t675748605 7 exameaspxo7t675748605 8 exameaspxo8t675748605 9 exameaspxo9t675748605 10 exameaspxo10t675748605 11 exameaspxo11t675748605 12 exameaspxo12t675748605 Gupy Simulado httpsprimeiraescolhagupy2azurewebsitesnetexameaspxo1t67574 2 of 2 01042023 2009