Question

   When I watched wild baboons(狒狒) in Africa,it seemed as if they ate everything. But did they really? They have simple stomachs. If baboons eat foods that have a lot of fiber, they get very little nutrition from that food,and then they don't have room for more nutritious foods. Baboons need foods with a lot of nutrients. Baboons should be picky eaters.

   In the 1990s,a team of primatologists(灵长类 动物学家) solved this riddle. By watching wild baboons,the team of primatologists found that the monkeys ate whatever they could find as long as the foods had a lot of protein and fat. Baboons avoided foods with lots of fiber. Many foods had high protein or high fat,and many foods had low fiber. So it looked as if baboons ate everything.

   Research on baboon foods made me wonder how baboons found their foods. I knew baboons were smart. For their size,they have big brains,and they remember a lot of things. Even though some baboon troops have more than 100 monkeys,baboons easily remember their friends and enemies. I reasoned that baboons might memorize the locations of some foods.

   For 18 months I lived in a tent in Ruaha National Park in Tanzania. I camped next to the river. I studied only m往le baboons because females have babies,and I didn't want to scare the little ones. Each morning,I picked a different male monkey. Everywhere he went,I followed. Every time he ate,I wrote down the food type and how much he ate.

   I discovered that baboons did not find baobab trees(猴面包树) randomly. Instead,the monkeys walked quickly and directly to baobab trees. The same was not true for other foods. Baboons used more random patterns to find elephant dung (粪便) , young antelopes,and grasses. Sometimes they found these foods on their way to the baobab trees!

6. What does the underlined part “this riddle” in Paragraph 2 refer to?

   A. Where wild baboons live.

   B. How wild baboons find foods.

   C. If wild baboons eat everything.

   D. If wild baboons have simple stomachs.

7. Wild baboons enjoy foods with .

   A. lots of protein and fiber

    B. lots of protein and fat

   C. lots of fat and fiber

   D. lots of fiber only

8. What do we know about wild baboons?

   A. They have few friends.

   B. They are not very smart.

   C. They have many enemies.

   D. They have a good memory.

9. What is Paragraph 4 mainly about?

   A. How the author studied wild baboons.

   B. The living environment of wild baboons.

   C. How female wild baboons give birth to babies.

   D. Differences between male and female wild baboons.

10. It can be inferred that wild baboons know the locations of.

   A. grasses   B. baobab trees

   C. elephant dung   D. young antelopes

Answer 1

6. C 7. B 8. D 9. A 10. B

(自然)

本文是说明文。文章介绍了科学家对野生狒狒饮食情况的研究结果。

6. C.篇章结构题。由第一段中的it seemed as if they ate everything. But did they really? ... Baboons should be picky eaters可推断，划线部分指代野 生狒狒是否挑食这个谜。

7. B.细令理解题。由第二段中的the monkeys ate whatever they could find as long as the foods had a lot of protein and fat可知，野生狒狒喜欢富含蛋白质和脂肪的食物。

8. D.细节理解题。由第三段中的 baboons were smart ... remember a lot of things ... easily remember their friends and enemies可知，野生狒狒 记性好。

9. A.段落大意题。第四段主要讲作 者研究野生狒狒寻找食物的过程和方法。

10. B.推理判断题。由最后一段中的 baboons did not find ... walked quickly and directly to baobab trees可推断，野生狒狒知道猴面包树的位置。