TAILIEUCHUNG - Mastering skills for the toefl ibt advanced part 6

Research conducted over the years by applied linguists, psychologists, and educators has yielded a considerable amount of information on the best methods for refining these skills for the purposes of standardized tests. By keeping the following study tips in mind, you can optimize your study habits and achieve the highest possible scores with the level of language proficiency you have obtained. | 3. According to paragraph 5 relocation and hibernation are different from other 1 thermoregulatory mechanisms because i A they can be used to produce and conserve heat but not cool an organism. S B they do not cause a physiological H change within the organism. C they may require conscious effort by the organism D they work independently of other thermoregulatory mechanisms. Fill in the blanks to complete the summary. The passage describes how mammals have developed a nervous V f system to control their internal temperature. Thermoregulation allows for temperature through a series of physiological responses controlled by-the hypothalamus. The hypothalamus can signal the muscles to _ substances to produce energy and can cause blood vessels to _ _ to. reduce heat loss. Because of thermoregulation mammals can maintain a relatively constant i temperature in warm and cold conditions alike. This allows for freedom from the environmental conditions that affect other animals like reptiles but it requires a great .of energy. ----- 36 Chapter 1 Wir -ji 5 Environmental Science X rn o 2 CT Read the following passage. Then fill in the diagram with the information that you read. Track 6 pronounced T-- . . . very riotictedblb accumulate to gath q pi qolieci-. . f manipulate . to skllifullyhandle or V control . . hassle 1 an annoying problem that requires effort to fix . _ y1 WWi sediih nfiy y iy - . matter that1 settles at the bottom of a liquid y floodplain j p . an area of low-lying. P-. ground near a river T mitigate 1 - . to make less severeior serious V I . L -iv streamlined vy . with a smooth shape . . In earlier eras humans were forced to adjust their living patterns according to seasonal changes each year. For people that settled in river valleys these adjustments were especially pronounced. Over the course of the winter months snow accumulates in mountainous regions. With the onset of spring and summer the snow melts and collects .

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