若b＜0，化简-ab3的结果是（ ） A．-bab B．b-ab C．-b-ab D．b

阅读理解。

     For those who study the development of intelligence (智力) in the animal world, self-awareness 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 evry little attention to the

reflected image. Only humans, and some intelligent animals like apes and dolphins, have 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 self-reflection test.

     "We thought that elephants were the next important animal," said Dinana 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 8-foot-

square 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 self-awareness.

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. 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.

基本分析主要包括宏观经济分析、行业分析与区域分析、公司分析三个方面的内容。

CTAISV2.0江苏优化版的主要结构包含（）。

A.CTAISV2.0

B.CTAISV2.0江苏优化版流程管理系统

C.CTAISV2.0江苏优化版监控决策系统

D.其它应用软件外部接入

穿着选择灰色、黑色会给人一种坚实、端庄、严肃的感觉。

造成浮选泡沫发粘的原因及主要调整方法有哪些？