4、 思想性。它往往以具体细小的事物，阐发一点耐人寻味的哲学道理，给人起启示，发人深省。阅读科普文章，要注意把握好两个层面的目标和要求：一是科学与人文 的层面。也可以说是科学的人文性。从科学中吸取智慧与力量，体会求实的科学态度和勇于探索创新的科学精神。另一个是知识和能力的层面。要根据科学小品这一 体裁的特点，学会筛选并整合文中有用信息，把握作者的写作思路，重点研习将抽象内容说明得具体生动的技巧。
For those who study the development of intelligence （智力） in the animal world，selfawareness is an important measurement. An animal that is aware （意识） of itself has a high level of intelligence.
Awareness can be tested by studying whether the animal recognizes itself in the mirror, that is，its own reflected image （反射出的影像）. Many animals fail this exercise bitterly, paying very little attention to the reflected image. Only humans, and some intelligent animals like apes and dolphins，have been shown to recognize that the image in the mirror is of themselves.
Now another animal has joined the club. In the Proceedings of the National Academy of Sciences, researchers report that an Asian elephant has passed the mirror selfreflection test.
“We thought that elephants were the next important animal.” said Diana Reiss of the Wildlife Conservation Society, an author of the study with Joshua M. Plotnik and Fans B. M. de Waal of Emory University. With their large brains, Reiss said, elephants “seemed like cousins to apes and dolphins”．
The researchers tested Happy, Maxine and Patty, three elephants at the Bronx Zoo. They put an 8footsquare mirror on a wall of the animals' play area （out of the sight of zoo visitors） and recorded what happened with cameras, including one built in the mirror.
The elephants used their long noses to find what was behind it, and to examine parts of their bodies.
Of the three, Happy then passed the test, in which a clear mark was painted on one side of her face. She could tell the mark was there by looking in the mirror, and she used the mirror to touch the mark with her long nose.
Diana Reiss said, “We knew elephants were intelligent, but now we can talk about their intelligence in a better way.”
1．What can mirror tests tell us about animals?
A．Whether they have large brains.
B．Whether they have selfawareness.
C．Whether they enjoy outdoor exercises.
D．Whether they enjoy playing with mirrors.
2．Why does the author mention apes and dolphins in the text?
A．They are most familiar to readers.
B．They are big favorites with zoo visitors.
C．They are included in the study by Reiss.
D．They are already known to be intelligent.
3．What made Happy different from Maxine and Patty?
A．She used her nose to search behind the mirror.
B．She recognized her own image in the mirror.
C．She painted a mark on her own face.
D．She found the hidden camera.