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【简答题】阅读理解 Blood Donation(献血) A grown-up person has ten or eleven pints of blood inside his or her body. We can lose a pint of blood without feeling anything, but if we lose too much blood, we will feel wea...
【简答题】听下面一段对话，回答1-3题 1. Why are the blood banks short of blood? A. Fewer people are giving blood. B. The number of operations is increasing. C. Many people have been hurt in accidents recently 2. Why is the...
【简答题】设 与 相互独立, ,则 。
【简答题】阅读理解。 Every year, World Blood Day is celebrated by blood services worldwide on 14 June, the birthday of Nobel Prize winner Karl Landsteiner, the man who discovered the ABO blood group system. If you h...
【简答题】阅读理解。 Blood Donation (献血) A grown-up person has ten or eleven pints (品脱) of blood inside his or her body. We can lose a pint of blood without feeling, but if we lose too much blood, we feel weak and c...
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