tailieunhanh - Cracking the Toefl IBT 2009 edition part 42

Rõ ràng, bạn không thể tiếp cận một đoạn TOEFL che đọc trên máy tính cùng một cách mà bạn sẽ tiếp cận một phần còn lại trên giấy. Đối với một điều, bạn sẽ có thể gạch dưới, vòng tròn, hoặc nhãn hiệu khác trên văn bản. | TOEFL Writing . nn U8n9 MlOfTUtf Scant physical evidence remains of the first human domestication of grain. Still there is enough to conclude that ancient peoples motivated by the nutritional value of bread or cakes made of wild wheat looked for controlled ways to grow it to provide a consistent food supply. Three related discoveries are likely to have led to the introduction of bread as the first grain-based food. The first discovery was that wheat could be prepared for use by grinding. People probably began consuming wheat by chewing it raw. Because wheat is very hard they gradually discovered that it was less trouble to eat if crushed to paste between two stones. The result would have been the ancestor of the drier more powdery wheat flour we use today. From there it was a short step to the next breakthrough baking the simplest bread which requires no technology but fire. Loaves of wheat paste when baked into bread could be stored for long periods certainly longer than raw seeds. This kept the food value of wheat available for an extended period after it had been harvested. Finally ancient peoples found that if the paste was allowed to sit in the open yeast spores from the air settled on it and began fermenting the wheat. This natural process of fermentation caused bubbles to form in the wheat paste suggesting that it would be lighter in texture and even easier to eat when baked. 416 I Cracking the TOEFL BT Resume playing Track 10 on rhe CD. N Now listen to part of a lecture on the topic you just read about. N Summarize the points made in the lecture you just heard explaining how they cast doubt on the contents of the reading. You may refer to the passage as you write. Writing Practice Drills 417 TOEFL Writing tiff JUI K d ir M0EÎWE 00 29 57 Directions You have 20 minutes to plan and write your response. Your response will be graded on the quality of your writing and on how well your response presents the points in the lecture and their relationship to the .