题目内容

   One of Sri Lanka's most incredible(难以置信的) places to visit is the rock fortress(要塞) of Sigiriya,which is in the northern part of the island.36 On its top are the ruins of a fifth-century palace.

This is a very popular tourist  destination(目的地) and can be quite busy sometimes. 37 However,it is such a great place that it's worth the effort.

    38 There is a bus service from the town of Polonnaruwa. You can do the visit in a morning or

an afternoon. You should take a sun hat and some water for the heat,but you shouldn't need food,because there is lots available when you're there.

    When you arrive,first climb the stairs to the wall paintings.  39 Then,you continue climbing the iron stairs to the top of the rock. However,it can be very windy. So do take care. From the top you can see the ruins of the fortress,the water pools,and wonderful views of the island. 40 Finally,it's time to go back down the stairs,and catch another bus back to the town.

   A. They are about 1 ,500 years old.

   B. The easiest way to get there is by bus.

   C. It's a huge rock about 350 metres high.

   D. It contains the mins of an ancient palace.

   E. And unfortunately the weather can also make life difficult.

   F. Take your time to appreciate the building work that happened here.

   G. There's a stairway leading from the base to the top of the mountain.

36. C 38. B 39. A

36. C. 根据上一句中的 the rock fortress 和下一句中的On its top are 可知,C项“它是一块高达350米的巨石”符合语境。

37. 根据上一句中的can be quite busy sometimes 和下一句 However,it is such a great place that s worth the effort可    知,E项与上一句构成并列,与下一句形成转折,符合语境。

38. B.根据下一句There is a bus service from the town of Polonnamwa 可知,B 项中的by bus与之相呼应。

39. A.根德上一句中的the wall paintings可知,A项“它们有着1500 年的悠久历史”符合此处语境。其中 的They指代上一句中的the wall paintings 

40. F。根齒上一句 From the top you can see the ruins of the fortress,the water pools,and wonderful views of the island 和下一句中的 Finally,it's time to go back ...可知,空格处是到 达巨石之顶后、下梯级返回小镇前的 活动,故F项“花时间好好欣赏这些建筑”符合语境。

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     The mystery of why humans are the only animals to have chins (下巴) may have been solved by scientists who suggest that it is connected to the invention of cooking.

    A paper from the University of Florida tries to explain exactly why humans 一 unlike all other primates (灵长目动物) 一have chins.

     A team led by Dr James Pampush collected information from more than 100 kinds of primate and compared it with historical information. Computer modelling found how the chin developed.

    Random genetic change(随机的基因变化)was ruled out because the chin developed 77 times faster than the average genetic change. And the study finds no evidence that it -served a useful purpose. The research,published in the Journal of Human Evolution,suggests the chin is a by-product of another event. In this case,the event could well be the invention of cooking.

     “The chin began to appear as a result of major changes six million years earlier. The arrival of cooking and softer food meant humans no longer needed big teeth and powerful jaws .and over the next two million years to 200,000 years both got smaller and the chin was bora ,” said Dr Pampush. “My guess is that it most likely happened around two million years ago when there was a jump in brain size. The changes which finally lead to the chin are directly related to cooking,and indirectly related to larger brains and bodies."

     Dr Pampush's new theory goes against previous suggestions that the chin was an example of sexual selection,with attractive chins marking out men who are likely to make good mates(配偶) . The fact that both men and women have chins means the theory is unlikely.

     Another theory put forward in the past said that the chin was a way to balance out the stress of chewing,but Dr Pampush also threw doubt on that idea.

1. The reason why we have chins .

   A. is connected to humans’ action of chewing

   B. has something to do with cooking

   C. is random genetic change

   D. is related to eating time

2. How did the researchers get their result?

   A. By carrying out experiments. .

   B. By studying scientific theories.

   C. By examining the human brain.

   D. By comparing recorded information.

3. Before developing chins,humans .

   A. had bigger teeth

   B. cooked softer food

   C. had smaller jaws

   D. had larger bodies

4. According to Dr Pampush,the chin most

probably appeared around .

   A. 6 million years ago

   B. 4  million years ago

   C. 2  million years ago

   D. 0.2 million years ago

5. What does the underlined part “the theory” refer to?

   A. Men are likely to have more attractive chins.

   B. The chin helps humans attract a mate.

   C. Both men and women have chins.

   D. Dr Pampush's theory.

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