T细胞的表面标志不包括() A.TCR B.CD2 C.丝裂原受体 D.CKR E.

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问题:

T细胞的表面标志不包括()

A.TCR

B.CD2

C.丝裂原受体

D.CKR

E.Iga与Igβ

考点:计划生育(医学高级)计划生育综合练习计划生育综合练习题库
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复利计算时,利息的计算公式是( )。

A.In=P·n·i

B.In=P[(1+i)n-1]

C.In=P(1+i·n)

D.In=P(1+i)n

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输水隧洞可分为进口段、()和出口段三部分。

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B

  More and more young people enjoy having pets,but they don't like to keep them.At present in Changchun,people prefer to rent pets and play with them during weekends,regarding this as a fashionablelifestyle.

  Mr.Feng,from Jilin Province,likes pet dogs.Last weekend he rented a Scottish shepherd dog from a localpet shop.He bathed the dog,and went walking with it.He said he could not keep pets in his spare time because he was busy everday except weekends.To rent pets during weekends seemsto be the most practical and economical way to relax himself.

  A manager from a pet shop says his customers(主顾) are all like Mr.Feng,usually too busy to keeppets,and some of them have never kept any pets before. But they hope torent pets and learn to keep pets so that they can know whether they can be good pet masters or not.

  It's reported that all pets for rent need to beimmunized(免疫).Before they are rented out,pet shops will teach their customers the ABCs of pet keeping and preparing pet food based on each pet's taste.

  Shop assistants will also provide(提供)different konds of services for pets like health checkup if their customers want to rent pets for a longer period.

  Dogs for rent are often not ordinary ones,so their rent is high,usually 200 - 500 yuan(US$ 25-63) per day.Sometimes,you have to leave thousands of yuan with the owner before you can take a dog away.

  60.Mr.Feng rents pets instead of keeping them mainly because _______.

  A.it's cheaper                  B.it is more fun

  C.he has little spare time         D.he wants a new pet for each week

  61.What do we know about those who rent pets?

  A.None of them ever kept a pet before.

  B.They'll become pet owners later.

  C.They enjoy having pets.

  D.They want to help protect animals.

  62.The underlined phrase "the ABCs(of…)"in the 4th paragraph refers to "______(of…)".

  A.the possible dangers           B.the basic knowledge

  C.the communicative language    D.the rules set by the shops

  63.The dogs' rent is high because___________.

  A.the customers are rich           B.there are few dogs to rent

  C.their owners hate to leave them    D.they are top - class dogs

题型:单项选择题

近代中国四大米市是长沙、九江、芜湖、无锡,请问对与错。

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依据《烟花爆竹安全管理条例》的规定,本条例所称烟花爆竹,是指烟花爆竹制品和用于生产烟花爆竹的民用()、烟火药、引火线等物品。

A.黑火药

B.雷管

C.炸药

D.导火索

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