【題目】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(輸血).

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】

試題分析：本文講述的是人們在接受治療時需要輸入血液，所以就有了捐血的行動，但是捐血卻存在很多問題，那這些問題都是怎么被解決的呢？

【1】考查動詞單數(shù)。主語是blood,是不可數(shù)名詞所以謂語動詞要用單數(shù)，故填exits

【2】考查名詞。這里指的是捐贈人，故填donors/donators

【3】考查動詞被動式。主語是血液，血液是被檢驗的，所以這里要用動詞的被動式，故填be examined

【4】考查關系詞。這一句是由why引導的表語從句，后面接的是結(jié)果；故填why

【5】考查代詞的使用。這里是指其他的科學家，故填other

【6】考查副詞的用法。這里修飾的是動詞grow,所以要用副詞，故填directly

【7】考查不定冠詞的使用。Technique是可數(shù)名詞，所以前面要加不定冠詞；故填a

【8】考查介詞的使用。題意：把干細胞變?yōu)榧t血細胞，develop into 演變成..，，故填into

【9】考查形容詞的使用。根據(jù)題意這里想表達的是否定的意思，故unlikely

【10】考查從句的使用。這里是that引導的表語從句，但是從句的主語不完整，所以需要用what來引導一個名詞性從句做主語，what在這里做名詞性從句的主語，故填what

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