The dinosaurs footprints and extinction

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题目与答案

1. 1 Dr Paul Olsen and his colleagues believe that asteroid knock may also lead to dinosaurs’ boom.
   • YES
   • NO
   • NOT GIVEN

   答案：YES

   原文定位：There is thus a nice if ironic, symmetry in the idea that a similar impact brought about the dinosaurs’ rise. That is the thesis proposed by Paul Olsen, of Columbia University, and his colleagues

   同义替换：「believe」↔「thesis proposed by」，「boom」↔「rise」，「lead to」↔「brought about」

2. However, there were no old impact trace being found? The answer may be that we have 10_____ the evidence.

   答案：overlooked

   原文定位：It may, of course, have been overlooked. Old craters are eroded and buried, and not always easy to find

   同义替换：「evidence」↔「overlooked」

3. Old craters are difficult to spot or it probably 11_____ vanished.

   答案：vanished

   原文定位：Alternatively, it may have vanished

   同义替换：「probably」↔「may」

4. Due to the effect of the earth moving. Even a crater formed in Ocean had been 12_____ under the impact of crust movement.

   答案：swallowed up

   原文定位：There is no ocean floor left that is more than 200m years old, so a crater that formed in the ocean would have been swallowed up by now

   同义替换：「crust movement」↔「continental drift」

5. Besides, the third hypothesis is that the potential evidence - some craters maybe 13_____ .

   答案：misdated

   原文定位：There is a third possibility, however. This is that the crater is known, but has been misdated

   同义替换：「hypothesis」↔「possibility」

6. 2 Books and movie like Jurassic Park often exaggerate the size of the dinosaurs.
   • YES
   • NO
   • NOT GIVEN

   答案：NOT GIVEN

   原文定位：It was in the subsequent Jurassic;that they overran the planet and turned into the monsters depicted in the book and movie “Jurassic Park

7. 3 Dinosaur footprints are more adequate than dinosaur skeletons.
   • YES
   • NO
   • NOT GIVEN

   答案：YES

   原文定位：Dinosaur skeletons are rare. Dinosaur footprints are, however, surprisingly abundant

   同义替换：「more adequate」↔「surprisingly abundant」

8. 4 The prints were chosen by Dr Olsen to study because they are more detectable than the earth magnetic field to track the date of geological precise within thousands of years.
   • YES
   • NO
   • NOT GIVEN

   答案：NOT GIVEN

   原文定位：That regularity, combined with reversals in the earth’s magnetic field;means that rocks from this place and period can be dated to within a few thousand years. As a bonus, squishy lake-edge sediments are just the things for recording the tracks of passing animals

   同义替换：「geological precise」↔「dated」

9. 5 Ichnotaxa showed that footprints of dinosaurs offer exact information of the trace left by an individual species.
   • YES
   • NO
   • NOT GIVEN

   答案：NO

   原文定位：These are recognizable types of the footprint that cannot be matched precisely with the species of animal that left them

   同义替换：「exact information」↔「precisely」

10. 6 We can find more Iridium in the earth’s surface than in meteorites.
    • YES
    • NO
    • NOT GIVEN

    答案：NO

    原文定位：Iridium is normally rare at the earth’s surface, but it is more abundant in meteorites

11. Dr Olsen and his colleagues applied a phenomenon named 7_____ to explain the large size of the Eubrontes,

    答案：ecological release

    原文定位：Dr Olsen and his colleagues suggest that the explanation for this rapid increase in size may be a phenomenon called ecological release

    同义替换：「named」↔「called」，「applied」↔「explanation for」，「large」↔「increase」

12. which is a similar case to that nowadays reptiles invade a place where there are no 8_____;

    答案：competitors

    原文定位：This is seen today when reptiles (which, in modern times, tend to be small creatures) reach islands where they face no competitors

    同义替换：「invade」↔「reach」

13. for example, on an island called Komodo, indigenous huge lizards grow so big that people even regarding them as 9_____ .

    答案：dragons

    原文定位：The most spectacular example is on the Indonesian island of Komodo, where local lizards have grown so large that they are often referred to as dragons

    同义替换：「indigenous」↔「local」，「huge」↔「so large」，「regarding them as」↔「referred to as」