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 (食草動物), 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

1.D

2.C

3.A

4.C

5.B

6.A

7.D

8.A

9.D

10.B

11.C

12.B

13.A

14.B

15.D

【解析】

試題分析：本文講述科學(xué)家做了幾個實(shí)驗(yàn)來驗(yàn)證熊貓更偏愛甜的東西。

1. giant pandas may appear perfectly happy chewing bamboos,本文的研究對象主要是熊貓，可知科學(xué)家是選擇熊貓來研究，故選D

2. 考查形容詞詞義辨析。 A高的 B簡單的C低的 D不同的， 根據(jù)句子the bamboos, has a very sugar content and is therefore not considered sweet竹子不被認(rèn)為是甜的，可知其糖的含量應(yīng)該較低，故選C

3. 考查動詞詞義辨析。 A失去B跟隨C開始D保持，根據(jù)句子Could this mean that pandas have their hobby for sweet things?科學(xué)家發(fā)現(xiàn)熊貓愛吃甜的，然而竹子不甜，難道這意味著熊貓失去了對甜食的愛好嗎？故選A

4. pandas were given six kinds of sweet liquids that are found in fruits and vegetables熊貓應(yīng)該是被給六種在水果蔬菜中很自然就能發(fā)現(xiàn)的甜的液體，故選C

5. ate up all the sweet liquids and the water was left untouched.可知熊貓們同時也被給了水，故選B

6. A拿起B(yǎng)藏起C拒絕D分享，根據(jù)句子In each of the taste tests, the animals the natural sweeter liquids and ignored the water，熊貓喜愛甜的東西，可知在每次試驗(yàn)中，熊貓都是拿起甜的液體，忽略了水，故選A

7. each of the taste tests, the animals the natural sweeter liquids and ignored the water . 熊貓喜愛甜的東西，可知在每次試驗(yàn)中，熊貓都是拿起甜的液體，完全忽略了水，故選D

8. was even more interesting is that when the scientists the water with five different man-made sweeteners科學(xué)家們試驗(yàn)完天然甜食后，嘗試用水和幾種人造甜物混合，故選A

9. these tests, they picked the water instead，熊貓在這些實(shí)驗(yàn)中卻只挑了水，可知混合后的東西人類覺得很美味，但是熊貓卻不感興趣故選D

10. scientists believe that it could be either because pandas found them to be too or not sweet enough科學(xué)家認(rèn)為熊貓只挑水的原因要么是它們太甜，要么是不夠甜，故選B

11. mixture could not the pandas.熊貓寧愿選擇水，可知這種混合物不能吸引熊貓，故選C

12. 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.因?yàn)閯游飯@里的熊貓更偏愛蘋果，馬鈴薯甚至月餅，可知科學(xué)家對于這種結(jié)果并不感到吃驚，故選B

13. believe that the pandas may have once sweeter foods that were available in the lowland areas that they used to live in，科學(xué)家相信熊貓曾居住在有甜食的低地，因此喜歡甜食，故選A

14. when human settlement in the lowland areas them to the bamboo forests in the mountains,因?yàn)槿祟惗ň釉谛茇堅幼〉牡偷�，迫使熊貓進(jìn)入山間的竹林地帶，故選B

15. had no 15 but to settle for the almost sugarless plants.熊貓居住的地方被人類占領(lǐng)，熊貓沒有選擇只好居住在無糖植物地區(qū)，故選D

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