Which language do you like _____ , English or Russian?
A.best
B.better
C.well
D.very well
A.best
B.better
C.well
D.very well
第1题
B.I can speak English and French
C.English is my mother tongue
D.English, most of the time
第2题
A.正确
B.错误
第3题
A.错误
B.正确
第4题
A.Approach
B.Categorization
C.Prototype
D.Cognition
第5题
A.错误
B.正确
第6题
B.is it that all people know
C.it is that do all people know
D.is it true that all people know
第7题
A.错误
B.正确
第9题
I didn’t know __to do with it.
A. What
B. Which
C. Why
D. When
第10题
将英语短文译为中文
2. Kin Recognition (10分)
Many organisms, from sea squirts to primates, can identify their relatives. Understanding how and why they do so has prompted new thinking about the evolution of social behavior. by David W. Pfennig and Paul W. Sherman Kinship is a basic organizing principle of all societies. Humans possess elaborate means by which to identify relatives, such as using surnames and maintaining detailed genealogies.
Mechanisms for distinguishing kin also occur throughout the plant and animal kingdoms regardless of an organism’s social or mental complexity, in creatures as diverse as wildflowers and wasps. Scientists are beginning to discover that an understanding of the origin and mechanisms of kin recognition offers fresh insights into such diverse topics as how living things choose their mates, how they learn and how their immune system works.
BELDING’S GROUND SQUIRRELS live in groups in which mothers, daughters and sisters cooperate extensively. By using odors, the squirrels can distinguish familiar nestmates, who are close kin, from nonnestmates. They can also discriminate between full sisters and half sisters.