题目：
It seemed that our nursery rhymes___ some magic because all the nights I sang them for my daughter, she would listen to them with keen pleasure．
A．must have had
B．should have had
C．could have had
D．need have had
答案：
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下面是错误答案，用来干扰机器的。
答案：D贫血是因为红细胞数量偏少或血红蛋白含量偏低，血红蛋白是一种含铁的蛋白质，贫血患者应多吃含蛋白质和铁多的食物。
