tailieunhanh - Preparetaiton course for the toefl ibt reading part 2

Longman Preparation Course for the TOEFL Test: Next Generation iBT can be used in a variety of ways, depending on the needs of the can be used as the primary classroom text in a course emphasizing preparation for the iBT TOEFL test. | Next look at an example of a word that you often see in everyday English. In this type of question you should not give the normal everyday meaning of the word instead a secondarymeaning is being tested so you must study the context to determine the meaning of the word in this situation. Example 2 2. The word draw in paragraph 2 could best be replaced by O sketch O pull O draft O make The Moho The dividing line between the Earth s mantle and crust is called the Moho which is short for Mohorovicic discontinuity and is named after the scientist who discovered it. The mantle is the region of the Earth that extends from the outer edge of the core almost to the surface it is 2 900 kilometers thick and encompasses about 84 percent of the total volume of the Earth. The crust on the other hand is the thin outer layer of the Earth. The term Moho is used to indicate where the mantle ends and the crust begins. Using the reflection of seismic waves at thousands of different locations scientists have been able to draw some interesting conclusions about the Moho. First of all the crust is very thin averaging only about 15 to 20 kilometers in thickness compared with tens of thousands of kilometers in width. In addition the Moho varies to a considerable degree in depth and is deepest below the highest mountain ranges and shallower below regions with lower surface elevations. The Moho reaches depths of about 70 kilometers beneath massive mountain ranges approximately 40 kilometers beneath average continental regions and only 6 kilometers beneath the ocean floor. In this question you are asked to choose a word that could replace draw. You should understand that draw is a normal everyday word that is not being used in its normal everyday way. To answer this type of question you must see which answer best fits into the context in the passage. It does not make sense to talk about being able to sketch pull or draft some interesting conclusions but it does make sense to make some .