If cloned animals could be used as organ donors, ().A、people don’t have to worry about cloning twins for transplantsB、raising animals such as pigs can help solve the problemC、the human body attacks and destroys tissue from other speciesD、it may be more efficient to produce such animals by cloning than by cur

If cloned animals could be used as organ donors, ().

A、people don’t have to worry about cloning twins for transplants

B、raising animals such as pigs can help solve the problem

C、the human body attacks and destroys tissue from other species

D、it may be more efficient to produce such animals by cloning than by cur


相关考题:

Let’s ___ play in the street . Father tells me ____ do so.A. not to ….. not toB. not …not toC. don’t , to notD. not to …don’t

3.Jack _______like baseball ________volleyball.A. don't ; orB. doesn't ; orC.don't ;andD.doesn't ;and

Don’t worry so much -- ()is my job! A、worryingB、worriedC、worry

Don’t worry ( ) it.Everything will be all right. A、withB、inC、forD、about

Must I stay at the office this afternoon? ---No, you ______.A、don’tB、needn’tC、don’t needD、can’t

We needn't__________. Everything turned _________all right in the end.A: worry ... upB: worry ... downC: have worried ... outD: have worried ... on

We _____ like coffee before_____ all. A.don’t … atB.didn’t … atC.didn’t … inD.don’t ...in

-- Ann is in hospital.-- Oh, really? I __ know. I __ go and visit her.A. didn’t; am going to B. don’t; wouldC. don’t; will D. didn't; will

What is the teacher doing in terms of error correction?T:Make a sentence with"have"!S:He have a ear.T:He HAVE a car?S:He HAS a car.T:Very good.He HAS a car.A.Direct correction.B.Indirect correction.C.Self-correction.D.Peer correction.

共用题干The City PlanningIn the past,cities usually grew in a disorderly way because few cities were built according to a plan.In the late 1 800s,the idea of a"beautiful city"came into_______(51).People felt that a city should have wide street,parks,and a civic centre.People_______(52)to realize that cities need to be planned.In the first part of the 1900s,cities began to_______(53)zoning laws.Zoning laws say what kind of building can be put up in different parts of a city.A factory cannot be put up on land _______(54)for apartments.Apartments,_______(55),cannot be built on land for houses.Meanwhile,cities were growing rapidly and changing almost_______(56).They faced many problems.Sometimes the streets in a city caused traffic_______(57).Sometimes there were not enough schools or hospitals for all the people who needed them. As people moved_______(58)to new areas of the city,older parts of town often became run-down.At first,citizens_______(59)groups that tried to solve the problems a city faced.Today, most large cities have city planning board_______(60)part of their city government. On the board are city_______(61)who have special training. Many of them have college_______(62)in city planning. They must know how a city's land can be_______(63)used.They_______(64)new areas of the city and decide how to improve older_______(65).City planing boards help the city meet the needs of all the people who live there._________(53)A:pass B:write C:build D:have