出自:佳木斯大学语言治疗学

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设,且与相互独立,则=( )。
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则( )。
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设与的相关系数为0,则( )。
·与必相关;
·与必不相关;
· 与不一定相关;
· 与相互独立.
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设是来自正态总体的样本,则下列统计量中( )是的最有效的估计量。
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设一批零件的长度服从正态分布,其中均未知,现从中随机抽取16个零件,测得样本均值,样本标准差,则的置信度为0.90的置信区间是( )
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在假设检验问题中,犯第一类错误的概率的意义是( )。
·在不成立的条件下,经检验被拒绝的概率;
·在不成立的条件下,经检验被接受的概率;
·在成立的条件下,经检验被拒绝的概率;
·在成立的条件下,经检验被接受的概率.
随机变量服从二项分布 ,则( )
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· n=4 p=0.6
· n=6 p=0.4
· n=8 p=0.1
· n=24 p=0.1
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With regard to marriage iBritain, present day girls differ from former time girls i____.
· the right marry
· more parental support
· choosing husbands
· social position
What is true concerning the book Pride and Prejudice
· It is the best book omarriage.
·It is a handbook of marriage.
·It gives quite some idea of English social life ithe past.
·It provides a lot of informatioof former time wealthy families.
Everything is decided ia family ____.
· by the couple
· with the help of their parents
· by brothers and sisters
· with the help of aunts and uncles
For aEnglish family, the husband’s duty is ____.
· supporting the family while the wife is financial
· defending the family while the wife is running the home
· financial while the wife is running the home
· independent while the wife is dependent
What does the author meaby “Family is of course aelastic word”
· Different families have different ways of life
· Different definitions could be giveto the word.
· Different nations have different families.
· Different times produce different families.
_____ iEngland, Anne Bradstreet both admired and imitated English poets.
·Having borand educated
·Borand educated
·Since borand educated
·To be borand educated
It was impossible to avoid_____ by the stormy weather.
·to be much affected
·being much affected
·having much affected
·to having beemuch affected
There are more tha50 proposals_____ at the conference.
· discussed
· discussing
·to be discussed
·having beediscussed
The boy’s father bought him a large toy train_____.
· to play with
· to play with it
· which to play with
· at which to play
A new technique______, the yield as a whole increased by 20 per cent.
· working out
· having worked out
·having beeworked out
·to have beeworked out
Mrs. Browis supposed _____ for Italy last week.
·to have left
·to be leaving
·to leave
·to have beeleft
Johregretted ______ to the meeting last week.
·not going
·not to go
·not having beegoing
·not to be going
The manager promised to keep me ______ of how our business was going on.
·to be informed
· oinforming
· informed
· informing
_____ for many years, the writer suddenly became famous.
· Having ignored him
·To be ignored
·To have beeignored
·Having beeignored
______ with the size of the whole earth, the highest mountaidoesn’t seem high at all.
·Whecompared
· Compare
·While comparing
· Comparing
The freshma______ lives downstairs speaks English fluently.
· which
· who
· what
· where
The machine will continue to make much noise_____ we have it repaired.
·when
· because
·if
· unless
My grandma was so _____of flying that she always preferred to take a train.
·enjoy
· keen
·scared
· scaled
Although she knows that her friend is very_____, sometimes Mary doesn’t understand her actions.
·well-meaning
· well-known
·well-off
· well-defined
Being _____doesn’t meabeing always happy.
· wealth
· wealthy
· wealthiness
· healthily
The fight ended only with the _____ arrival of the police.
· time
· timely
· timeless
· timetable
More informatioabout how to start a small business is available by ____ .
·contacting the writer iperson
·linking to other relevant articles
·reading the advertising brochures
· communicating with other readers
What kinds of businesses are regarded as “small” ithe UK
· Those with fewer tha50 employees.
· Those with only two or three owners.
·Those with a loaof 99.3% itheir capital.
· Those with aoutput value less than￡4 million.
What does the word “forewarn” (Line 2, Para. 4) mean
· Deal with.
· Argue with.
·Advise beforehand.
· Give instructions to.
What are most important for a business to survive
·Banking and insurance services.
·Research and business planning.
·Organizatioand management.
·Determinatioand originality.
This guide is intended to help people to ____ .
·cope with aeconomic crisis
·start a new small business
·raise funds for a new firm
·build up public relations
New York ____ second ithe productioof apples, producing 850,000,000 pounds this year.
·ranked
·occupied
·arranged
·classified
Gasoline is processed from ____ oil.
· raw
· rough
· crude
· tough
Yesterday he __________ $1000 to cancer research.
· gave
· gifted
· presented
· donated
This ticket _________ you to a free meal iour new restaurant.
· gives
· grants
· entitles
· credits
She made a____ attempt to persuade him into marrying her.
· earnest
· serious
· unchanged
· set
Wheshe kisses the baby, it makes the older child ____.
· resentful
· dissatisfied
· possessive
· jealous
Two of the childrehave to sleep ione bed, but the other three have _____ ones.
· complete
· singular
· separate
· different
His answer was so confused that I could hardly make any ________ of it at all.
· interpretation
· explanation
· intelligibility
· sense
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