题目内容

为预防由Rh抗原引起的新生儿溶血症,通常可于产后(①)小时内给Rh-母体注射(②)。

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参与Ⅰ型超敏反应的抗体主要是(①);参与Ⅱ型超敏反应的抗体是(②);在减敏治疗中,诱导机体产生的封闭抗体是(③)。

At that time we thought the story_____ not be true.

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