tailieunhanh - Delta's key the toefl test part 71

Tập các băng cassette kèm theo cuốn sách này bao gồm hơn sáu giờ nghe vật chất. Ngoài việc được sử dụng để luyện thi TOEFL, các băng cát-sét có thể được sử dụng cho thực hành cách phát âm, chính tả exercis ¬ es, và học từ vựng, cũng như cho việc học tiếng Anh thông qua nội dung học tập. | ĨAPEẽCRỈPT W Right. Oh I get it Primogeniture is when the first son gets everything. M That s right. W Now it s starting to make sense. 1. What are the students discussing 2. What does primogeniture mean Questions 3 through 5. Listen to a discussion in an astronomy class. W1 A famous solar astronomer often used to say The sun is a star delighted that one of these miraculous objects had been placed close to the earth for the benefit of people like himself. When we look at the sun we have an up-close view of one of the estimated billion billion stars that inhabit the universe. But what is a star M A ball of burning stuff that twinkles in the sky. W1 You re absolutely right. But it s even more than that. A star is a super hot massive ball of gas. Words such as massive quickly lose their impact when discussed on a cosmological scale but in relative terms a star is certainly massive. If the earth were the size of a marble for example what would the sun be the size of M An orange W1 A basketball is more like it. And our sun is an average smallish star in the white-yellow color range. Who can tell me what gives a star its color W2 Is the color because of the material it s made of W1 That s only part of it. The various colors or magnitudes of the stars are the result of a combination of interrelated factors but especially a star s temperature. The temperature is in turn determined by the star s mass and age. Generally speaking hotter stars range toward blue in color while cooler stars are reddish with the whitish-yellowish stars like our sun falling in between the two extremes. 3. What is the discussion mainly about 4. According to the professor if the sun were the size of a basketball what would the earth be the size of 5. What factors influence the color of a star Questions 6 through 10. Listen to part of a talk in a botany class. The instructor is talking about the leaf arrangements of plants. There are several common arrangements of leaves on wild flowering plants. In