题目内容
（请给出正确答案）
[单选题]
I ________in the company since I came to the city.
A.work
B.have worked
C.worked
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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.work
B.have worked
C.worked
如果结果不匹配，请 联系老师 获取答案
更多“I ________in the company since…”相关的问题
I will not attend my roommate Xiao Wang's wedding ______ to invite me himself.
A．unless he comes B．except he doesn't come
C．provided that he came D．unless he will come
听力原文：M: I have a terrible cold.
W: We have quite a few medications to make you more comfortable.
What does the woman probably do？
A．A teacher．
B．A student．
C．A doctor．
听力原文：M: I'd like to apply for the position you advertised in China Daily.
W: A good command of English and computing is a must as far as the position is concerned.
Q: What does the woman mean？
(15)
A．The job is advertised in English.
B．The Advertisement is in English paper.
C．She offers the man English and computer skills.
D．English and computer skills are essential for the job.
听力原文：M: Why are you so sure that Anne didn't commit the crime？
W: She couldn't have committed that crime because I was with her. And we were out of town on that day.
Where was the crime most probably committed？
A．In town.
B．Out of town.
C．In the man's house.
D．Outside Ann's house.
参考方程(15.19)和(15.20)。假定
，因而误差项中的总体变异与z中的总体变异一样。假定工具变量z与u轻微相关：Corr(z， u)=0.1， 又假定：与x具有略微强一些的相关：Com(z， x) =0.2。
(i)Ⅳ估计量的渐近偏误是多少？
(ii)z与u之间必须存在多大程度的相关， OLS才比2SLS具有更大的渐近偏误？
To act as a character, Konyk will log onto______.
A．gaiaonline. com
B．youtube. com
C．quizilla. com
D．myyearbook. com
