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Today’s topic is blood. Blood is indeed in the news, for on the __(1)__ of that announcement comes a report of tests __(2)__ in the United States and Japan __(3)__ artificial blood. After an accident, time is crucial for a person suffering from extensive blood loss, and transfusion of real blood must often __(4)__ a time-consuming test for blood type. Plasma does not require such a test but, because it can carry little oxygen, it is not a wholly satisfactory substitute. Perfluorocarbons appear to offer an answer. They are utilized in combination with an emulsion called Fluosol-DA, which provides a number of additional advantages __(5)__ real blood. These include the absence of a need for blood tests, the fact that it can be frozen for as long as two years, its elimination eventually as a gas through the lungs, and the impossibility of its transmitting such problems as hepatitis.
【題組】4.
(A) proceed
(B) precede
(C) be processed by
(D) be preceded by

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最佳解!
Ariel Chuang 小六上 (2013/05/18)
 proceed KK [prəˋsid] DJ [prəˋsi:d]1. 繼續進行; 繼續做(或講)下去[(+to/...precede KK [priˋsid] DJ [pri:ˋsi:d]1. (順序, 位置或時間上)處在...之前process加工Supermarkets sel.....看完整詳解


Today’s topic is blood. Blood is indeed ..-阿摩線上測驗