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Though giant pandas may appear perfectly happy chewing bamboos, scientists recently discovered that they would rather have something sweeter. Scientists chose       because the animals are herbivores (食草动物), which would mean that they would love sweets. However, the plant they choose, the bamboos, has a very          sugar content and is therefore not considered sweet. Could this mean that pandas have         their hobby for sweet things?

The pandas were given six kinds of sweet liquids that are       found in fruits and vegetables. They were also given       at the same time. In each of the taste tests, the animals       the natural sweeter liquids and ignored the water          . They ate up all the sweet liquids and the water was left untouched.

What was even more interesting is that when the scientists       the water with five different man-made sweeteners, ones that humans find delicious, the pandas were not as         . In these tests, they picked the water instead. The scientists believe that it could be either because pandas found them to be too         or not sweet enough and that the mixture could not         the pandas.

The scientists were not too          by the results, since pandas in zoos have always shown a preference for treats like apples, sweet potatoes and even mooncakes. Scientists believe that the pandas may have once          sweeter foods that were available in the lowland areas that they used to live in. But when human settlement in the lowland areas       them to the bamboo forests in the mountains, they had no         but to settle for the almost sugarless plants.

1.A. horses B. bears C. monkeys D. pandas

2.A. high B. simple C. low D. different

3.A. lost B. followed C. started D. kept

4.A. specially B. hardly C. naturally D. rarely

5.A. fruits B. water C. bamboos D. oxygen

6.A. picked B. hid C. rejected D. shared

7.A. largely B. gradually C. occasionally D. completely

8.A. mixed B. covered C. exchanged D. replaced

9.A. funny B. picky C. perfect D. interested

10.A. salty B. sweet C. sour D. hot

11.A. harm B. save C. attract D. change

12.A. Delighted  B. surprised C. disappointed D. concerned

13.A. Enjoyed   B.disliked C. controlled D. ignored

14.A. Encouraged B. forced C. introduced D. guided

15.A. desire B. chance C. wonder D. choice

高三英语完形填空中等难度题

少年,再来一题如何?
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