题目内容
（请给出正确答案）
[单选题]
How many jobs had you （) for before you were offered this one？
A. called
B. applied
C. paid
D. changed
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A. called
B. applied
C. paid
D. changed
如果结果不匹配，请 联系老师 获取答案
更多“How many jobs had you （) for b…”相关的问题
__do you go to see your Granny？ Four times a month.
A. How long
B. How often
C. How soon
D. How many
A.did your father retire
B.your father retired
C.has your father retired
D.your father has retired
A.had already left
B.have already left
C.were already leaving
D.had already been leaving
A、to correct
B、to be corrected
C、for correcting
D、corrected
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.
