How many rows can be retrieved using a single SELECT INTO statement()。
A、Only one row
B、As many as are in the result
C、As many as are host variables used in the call
D、As many as host variable array structures can hold
A、Only one row
B、As many as are in the result
C、As many as are host variables used in the call
D、As many as host variable array structures can hold
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.
__do you go to see your Granny? Four times a month.
A. How long
B. How often
C. How soon
D. How many
A. called
B. applied
C. paid
D. changed
A.come about
B.occur to him
C.bring about
D.take place
A、to correct
B、to be corrected
C、for correcting
D、corrected
A.did your father retire
B.your father retired
C.has your father retired
D.your father has retired
B.can you see such many
C.you can see such many
D.can you see many such
A.Many
B.Substantial
C.Much
D.lot of