With the quick
69
(develop) of science and technology, the process for many things to become a necessity from a luxury will be greatly shortened. Anything that can be imagined will be invented and in no time becomes a necessity
70
(access) to ordinary people.
Passage 3
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
61
(exist) in 7 percent of people, according to Sunday Times. There are fewer
62
(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
63
(examine) carefully for diseases such as HIV to make sure that it’s safe for transfusion(输血).
This is _64__ 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 __65__ scientists, who have tried to make blood by mixing up different ingredients together, Turner chose to grow blood
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