从Windows环境进入MS-DOS方式后,返回Windows环境的DOS命令为__

题型:单项选择题

问题:

从Windows环境进入MS-DOS方式后,返回Windows环境的DOS命令为______。

A.EXIT

B.QUIT

C.RET

D.MSDOS

考点:计算机等级考试C语言二级C语言笔试
题型:单项选择题

女性,24岁,半年前曾患乙型肝炎,目前停经49d,诊断为妊娠。检查:GPT正常,HBeAg(+),HBsAg(+)。前来咨询有关乙型肝炎对妊娠和胎儿的影响。

下列传播途径中正确的是

A.乙型肝炎病毒不能通过胎盘传递给胎儿

B.分娩时可传染给婴儿,但唾液、汗液不传播乙型肝炎病毒

C.胎儿多半受感染

D.婴儿不会成为病毒携带者

E.注射乙型肝炎疫苗可阻断母婴传染

题型:单项选择题
A lesson in caring
It was a cold evening. My daughter and I were walking up Broadway. I didn’t notice a guy sitting inside a cardboard box. But Nora    36    . She wasn’t even four, but she   37    at my coat and said, “That man’s cold. Daddy, can we take him home?”
I don’t remember my   38    . But I do remember a sudden   39    feeling inside me. I had always been delighted at how much my daughter noticed in her   40     , whether it was     41    flying or children playing. But now she was noticing   42    and beggary.
A few days later, I saw an article in the newspaper about volunteers who picked up a food package from a nearby school on a Sunday morning and   43     it to an elderly person. It was quick and easy. I signed us up. Nora was   44    about it. She could understand the importance of food, so she could easily see how   45    our job was. When Sunday came, she was ready, but I had to    46    myself to leave the house to fetch the food package. On my way to the school, I fought an urge (强烈愿望) to turn    47    . The Sunday paper and coffee were waiting for me at home. Why do this?   48    , we phoned the elderly person we’d been appointed. She   49    us right over.
The building was in a bad state. Facing us was a silver-haired woman in an old dress. She took the package and asked us to come in. Nora ran inside. I unwillingly followed.   50     inside, I saw that the department belonged to someone poor. Our hostess showed us some photos. Nora played and when it came time to say goodbye, we three hugged. I walked home    51    .
Professionals call such a(n)   52    “a volunteer opportunity”. They are opportunities and I’ve come to see. Where else but as volunteers do you have the opportunity to do something    53     that’s good for others as well as for yourself? Nora and I regularly serve meals to needy people and   54     clothes for the homeless. Yet, as I’ve    55     her grow over these past four years, I still wonder—which of us has benefited more?
小题1:
A.didB.wasC.hasD.had
小题2:
A.pulled    B.replacedC.wavedD.aimed
小题3:
A.debateB.replyC.explanationD.expression
小题4:
A.general    B.funnyC.heavyD.magical
小题5:
A.web     B.dream     C.castleD.world
小题6:
A.insectsB.animals    C.plantsD.birds
小题7:
A.coldness    B.illness    C.sufferingD.appearance
小题8:
A.sent  B.returned   C.devotedD.posted
小题9:
A.concernedB.sorry    C.worriedD.excited
小题10:
A.creative   B.valuable   C.shockingD.simple
小题11:
A.warn     B.stop     C.allowD.push
小题12:
A.back     B.away    C.upD.out
小题13:
A.Therefore   B.But  C.AnyhowD.Also
小题14:
A.requested   B.promised   C.invitedD.helped
小题15:
A.AlthoughB.Once     C.BecauseD.Though
小题16:
A.in tearsB.in surpriseC.in realityD.in disappointment
小题17:
A.stayB.visit     C.receptionD.challenge
小题18:
A.fairB.famous    C.difficultD.enjoyable
小题19:
A.collectB.make     C.orderD.design
小题20:
A.letB.made     C.watchedD.affected
题型:单项选择题

使单糖和还原性低聚糖呈红色

A.苯胺-邻苯二甲酸盐试剂
B.三苯四氮唑盐试剂
C.硝酸银试剂
D.3,5-二羟基甲苯-盐酸试剂
E.过碘酸加联苯胺

题型:单项选择题

交通行政主管部门及其公路管理机构和公安机关交通管理部门管理人员,必须秉公办事,()。

题型:单项选择题

核型47,XX(XY)()
核型5P-()
核型45,X()

A.Turner综合征

B.Klinefelter综合征

C.CatcrySyndrome(猫叫综合征)

D.Edwards综合征

E.Down综合征

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