文勇的新托福黄金&ccedil

Pakicetusfedonfishinshallowwaterandwasnotyetadaptedfor

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Unformatted text preview: Decreasing weight ○Moving forward Paragraph 1: Extinct but already fully marine cetaceans are known from the fossil record. ■How was the gap between a walking mammal and a swimming whale bridged? ■Missing until recently were fossils clearly intermediate, or transitional, between land mammals and cetaceans. ■Very exciting discoveries have finally allowed scientists to reconstruct the most likely origins of cetaceans. ■In 1979, a team looking for fossils in northern Pakistan found what proved to be the oldest fossil whale. 12. Look at the four squares [■] that indicate where the following sentence can be added to the passage. This is a question that has puzzled scientists for ages. Where would the sentence best fit? 13­14. Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some answer choices do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points. This passage discusses fossils that help to explain the likely origins of cetaceans­whales, porpoises, and dolphins. ● ● ● Answer Choices ○Recent discoveries of fossils have helped to show the link between land mammals and cetaceans. ○The discovery of Ambulocetus natans provided evidence for a whale that lived both on land and at sea. ○The skeleton of Basilosaurus was found in what had been the Tethys Sea, an area rich in fossil evidence. ○Pakicetus is the oldest fossil whale yet to be found. ○Fossils thought to be transitional forms between walking mammals and swimming whales were found. ○Ambulocetus' hind legs were used for propulsion in the water. 16 [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 1. ○2 This is a Factual Information question asking for specific information that can be found in paragraph 1. Choice 2 is the best answer. It is essentially a rephrasing of the statement in paragraph 1 that blowholes cannot disguise cetaceans’ affinities with other mammals. The other three choices are refuted, either directly or indirectly, by that paragraph. 2. ○1 This is an Inference question asking for information that can be inferred from paragraph 1 . Choice 1 is the best answer because paragraph 1 says that sea otters are unlike early mammals whose appearances are not easy to imagine. By inference, then, the early appearance of sea otters must be easy (or not difficult) to imagine. 3. ○3 This is a Vocabulary question. The word being tested is precious. It is highlighted in the passage. The correct answer is choice 3, "valuable." Anything that is precious is very important and therefore valuable. 4. ○3 This is a Factual Information question asking for specific information that can be found in the passage. Choice 3 is the best answer. Paragraph 3 describes the differences and similarities between Pakicetus and moder...
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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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