Y关于X的回归平方和为 A．20 B．30 C．40 D．45 E．0.7071

题型：单项选择题

问题：

Y关于X的回归平方和为

A．20
B．30
C．40
D．45
E．0.7071
根据11对(X,Y)的样本数据计算获得自变量X的方差为4.5，反应变量Y的方差为4.0，X与Y的相关系数平方值为0.5。

考点：公卫执业助理医师公卫执业助理医师
题型：单项选择题

Dear Bill,

Thank you for all of your kindness.I really enjoy staying at                   1.       

your home for one month.Would you like very much visit                           2.       

me in Beijing in next August?My cousin will have his                                  3.       

first time home stay in Virginia next summer,and you can                                   4.       

use his room!Don’t be too surprise when you see it                                     5.       

though.He is crazy with soccer,so he has many pictures                                  6.       

of famous soccer player on the wall.His room is very                                  7.       

comfortable,and you will enjoy staying in it.In his room                                8.       

there is the TV set.It is not a big one,but it is clear and                                9.       

bilingual(双语的).You can watch movies and the news in                            10.       

English.Also,you can use my cousin’s CD player.
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题型：单项选择题

下列关于肺痿治疗的各项叙述中，错误的是（）

A.不可妄投燥热，以免助火伤津

B.忌苦寒滋腻碍胃

C.慎用祛痰峻剂

D.重视调理肝肾

E.以补肺生津为原则
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题型：单项选择题

如图所示，若要使滑动变阻器滑片P向右移动时．弹簧测力计的示数变小，则变阻器接入电路的方式可以是

[ ]

A．C接E，D接F

B．C接E，B接F

C．A接E，D接F

D．A接E，B接F
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题型：单项选择题
Last summer I was a volunteer at a shelter (避难所)for the homeless, a place for homeless people to sleep at night. I wasn’t working that summer and was  36  only two classes in summer school, so I had some  37 time.
Three nights a week, I  38 in the kitchen of the shelter along with four other volunteers. We planned and  39 for 45 people hot meals  40 vegetables, chicken, fish and fruit. The homeless people  41 this good food because many of them usually didn’t eat well.
I 42 this volunteer work, making  43 with the four volunteers in the kitchen. One was a very nice elderly housewife, one a movie actor, another a young teacher, and the other a college student,  44 me.
I talked to a lot of the homeless people at the shelter. Their life stories  45 me with sympathy (同情). Some of them had  46 with alcohol(酒精) or drugs while others only had bad  47 . One woman worked for almost 30 years for a small company, and  48 she lost her job. She looked for a  49 job, but couldn’t find one, for she was too  50 . She could do nothing but sell her furniture — sofas, chairs, and tables  51 she could pay for her food. The woman  52 on job hunting, but she  53 couldn’t find one. She had no money for her  54 and had to sleep in her car. Then she had to sell her car. Alone, afraid and   55   , she finally came to the shelter.
小题1:
A．studyingB．planningC．holdingD．taking
小题2:
A．fullB．freeC．extraD．long
小题3:
A．helpedB．waitedC．appearedD．washed
小题4:
A．orderedB．boughtC．cookedD．finished
小题5:
A．withB．fromC．byD．in
小题6:
A．demandedB．neededC．collectedD．requested
小题7:
A．wantedB．hadC．ownedD．enjoyed
小题8:
A．decisionsB．wishesC．friendsD．changes
小题9:
A．asB．likeC．exceptD．besides
小题10:
A．fullB．filledC．caughtD．provided
小题11:
A．habitsB．worriesC．difficultiesD．problems
小题12:
A．luckB．painC．experienceD．loss
小题13:
A．soB．againC．thenD．thus
小题14:
A．goodB．freshC．skilledD．new
小题15:
A．oldB．poorC．sickD．dull
小题16:
A．ifB．becauseC．so thatD．in case
小题17:
A．wentB．movedC．cameD．worked
小题18:
A．alsoB．stillC．almostD．even
小题19:
A．blockB．carC．buildingD．flat
小题20:
A．homelessB．curiousC．shockedD．mad
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题型：单项选择题

帝国主义统治中国的主要支柱和中国封建军阀实行专制统治的社会基础是

A．官僚资本

B．民族资本

C．买办资本

D．封建剥削制度
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