文勇的新托福黄金&ccedil

Sreflectedinherwork

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Unformatted text preview: rtificial suns, Kramer made another interesting discovery. If the artificial Sun remained stationary, the birds would shift their 336 [email protected] 在在在在在在 www.liuwenyong.com 在在在在在在在在在在在在在在在,在在在在在在在在在在 direction with respect to it at a rate of about 15 degrees per hour, the Sun's rate of movement across the sky. Apparently, the birds were assuming that the "Sun" they saw was moving at that rate. When the real Sun was visible, however, the birds maintained a constant direction as it moved across the sky. In other words, they were able to compensate for the Sun's movement. This meant that some sort of biological clock was operating­and a very precise clock at that. 13. Look at the four squares [■] that indicate where the following sentence could be added to the passage. He arranged the feed boxes at various positions on a compass. Where would the sentence best fit? 14.Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that not presented in the passage or are minor ideas in the passage. This question is worth 2 points. Gustave Kramer conducted important research related to the ability of birds to orient and navigate. ● ● ● Answer Choices ○ Because caged birds become disoriented when the sky is overcast, Kramer hypothesized that birds orient themselves according to the Sun's position. ○ In one set of experiments. Kramer placed the box containing food at the same point of the compass each time he put food boxes in the birds’ environment. ○ Kramer demonstrated that an internal biological clock allows starlings to compensate for the Sun's movement. ○ After several studies. Kramer surmised that an internal biological clock allows some species of birds to navigate at night ○ The role of environmental cues in birds' navigation is clear, for on overcast days, birds use objects besides the Sun to orient themselves. ○ Kramer showed that night­migrating birds use the sky to navigate by the stars. 337 [email protected] 在在在在在在 www.liuwenyong.com 在在在在在在在在在在在在在在在,在在在在在在在在在在 在在在在在 ○3 2. ○3 3. ○4 4. ○1 5. ○2 6. ○3 7. ○2 8.○1 9. ○1 10. ○3 11. ○1 12. ○2 13. ○1 14. ○1, 3, 6 1. 338 [email protected] 在在在在在在 www.liuwenyong.com 在在在在在在在在在在在在在在在,在在在在在在在在在在 在在在在 在在在在在 在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在在 1950 在在在在在在 Gustave Kramer 在在在在在在在在在在在在在在在在在在在在在在在在在在 Kramer 在在在在...
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This note was uploaded on 09/17/2013 for the course LANGUAGE 13DL208 taught by Professor Wang during the Fall '13 term at East China Normal University.

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