【题目】Blood is important to support our lives. But for now, the only way we can get more of it is through donation. And donated blood has its own problems. First of all, certain blood types are extremely rare. Type O negative blood (O-), for example, only 【1】(exist) in 7 percent of people, according to Sunday Times. There are fewer 【2】(donate) and therefore there isn’t enough of this type of blood for everybody who needs it. In addition, donated blood comes from various people, which means that it has to 【3】 (examine) carefully for diseases such as HIV to make sure that it’s safe for transfusion(输血).
This is__【4】 scientists all over the world have been trying to make blood in labs. And now, someone finally succeeded—Marc Turner at the Scottish National Blood Transfusion Service has produced blood fit for transfusion, reported Forbes. Different from many ____【5】 scientists, who have tried to make blood by mixing up different ingredients together, Turner chose to grow blood 【6】(direct) from human stem cells. He developed 【7】 special technique to create a chemical environment similar to that in our bone marrow (骨髓). This environment encourages stem cells to develop fully 【8】 red blood cell.
According to Turner, his artificial blood is 【9】 (likely) to contain disease viruses or produce side effects. And the best part is that 【10】 he managed to produce was type O- blood. Not only is it a rare blood type, it’s also a universal type, which means it can be transfused into any patient.
【答案】
【1】exists
【2】Donors/donators
【3】be examined
【4】why
【5】other
【6】directly
【7】a
【8】into
【9】unlikely
【10】what
【解析】
试题分析：本文讲述的是人们在接受治疗时需要输入血液，所以就有了捐血的行动，但是捐血却存在很多问题，那这些问题都是怎么被解决的呢？
【1】考查动词单数。主语是blood,是不可数名词所以谓语动词要用单数，故填exits
【2】考查名词。这里指的是捐赠人，故填donors/donators
【3】考查动词被动式。主语是血液，血液是被检验的，所以这里要用动词的被动式，故填be examined
【4】考查关系词。这一句是由why引导的表语从句，后面接的是结果；故填why
【5】考查代词的使用。这里是指其他的科学家，故填other
【6】考查副词的用法。这里修饰的是动词grow,所以要用副词，故填directly
【7】考查不定冠词的使用。Technique是可数名词，所以前面要加不定冠词；故填a
【8】考查介词的使用。题意：把干细胞变为红血细胞，develop into 演变成..，，故填into
【9】考查形容词的使用。根据题意这里想表达的是否定的意思，故unlikely
【10】考查从句的使用。这里是that引导的表语从句，但是从句的主语不完整，所以需要用what来引导一个名词性从句做主语，what在这里做名词性从句的主语，故填what
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