Their speed and endurance are unusual fora creature so large, making them the most suitable animals to carry people and goods around the world. Horses offer other advantages as well. Since they eat grass, they can go almost anywhere that humans can, eating as they go . And unlike cows and camels, which must sit and rest to digest food, a horse’s digestive system allows it to graze and walk the whole day without stopping. By carrying people, goods and ideas between civilizations, horses changed history. Main idea in paragraph F: Horses were the best way to travel on land for most of the human history. Possible headings: ix An ideal form of transport i The fastest breeds of horses Comment: Even though paragraph F talks about speed, it only mentions it as one of the advantages of travelling on horses. And it definitely does NOT compare different breeds of horses based on speed. i The fastest breeds of horses Comment: The main idea of the paragraph is how horses were ideal form of transport and it is supported by giving a number of reasons: They are fast (speed, they can go far (endurance, and most importantly, they can go without stopping while eating (grazing): ix An ideal form of transport Comment: We have two more sentence-completion questions taken out of this paragraph: Q 12. As well as being quicker, horses have greater ………….… than most other
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