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【单选题】
取用无菌溶液的方法，除下述哪项外都是正确的A.
保持瓶盖内面的无菌
B.
开盖后，手不要触及瓶口及盖的内面
C.
倒溶液时瓶签向上
D.
倒去少许溶液冲洗瓶口
E.
将敷料放人无菌溶液内蘸取
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举一反三
【简答题】变异 (Variation) 是指亲代与子代、子代个体间的 。
【单选题】But Sarah said, 'Oh I expect Mum _________________ something - she always does.'
A.
has forgotten
B.
had forgotten
C.
forgot
D.
was forgetting
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【简答题】Sally has a lot of friends. She has five best friends, and the six of them are like sisters to each other, but they are all very different. Gemma is a very easy-going person. She does not get angry ea...
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