We keep our money in a bank for use when we need it.Doctors keep quantities of 1 kinds of blood in blood-banks for use when 2 .Blood can be 3 for about 3 weeks in a good state. If it is dried, part of it can be kept longer. So there is no 4 for the doctor to wait for a 5 of the right blood-group to e forward to offer his blood. The blood is 6 in the blood-bank for the transfusion(输血).More and more blood is being 7 in this way, and there is not always 8 .In England we sometimes hear a 9 in the streets of a town ing from a car which is standing on the 13 , and the time to go. The giving of blood for this purpose does not 14 a blood-donor(献血者)in good 15 .The doctors know 16 blood to take from the body, and the kind and helpful person does not 17 ill. Usually enough people e to offer their blood, and usually the donor 18 knows 19 he helps and whose life he 20 .1．
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1.A.someB.differentC.importantD.rare 2．A．woundedB．necessaryC．illD．hurt 3．A．givenB．keptC．leftD．placed 4．A．bloodB．hospitalC．timeD．need 5．A．patientB．woundedC．personD．blood 6．A．readyB．finishedC．driedD．bought7．A．soldB．usedC．driedD．given8．A．plentyB．muchC．usefulD．enough9．A．whistleB．noiseC．voiceD．news10．A．roadB．wheelC．directionD．farm11．A．saysB．speaksC．tellsD．talks12．A．usedB．enoughC．helpfulD．needed13．A．savedB．offeredC．keptD．handed14．A．hurtB．woundC．helpD．hit15．A．bodyB．orderC．placeD．health16．A．whatB．how muchC．whyD．how long17．A．seemB．fallC．receiveD．suffer18．A．alwaysB．readyC．neverD．fortunately19．A．whyB．whomC．howD．when20．A．treatsB．keepsC．preventsD．saves解析1．B;2．B;3．B;4．D;5．C;6．A;7．B;8．D;9．C;10．A;
11．C;12．D;13．B;14．A;15．D;16．B;17．B;18．C;19．B;
20．D