下列甲状腺癌预后最差的是（）
A. * * 状癌
B.滤泡癌
C.髓样癌
D.巨细胞型未分化癌
E.嗜酸性细胞腺癌
参考答案：D
下列食物中富含碘的是（）
A.薯类
B.豆类
C.谷类
D.海带
E.牛奶
- Was it because of his laziness_______ he didn't do the experiment successfully?
- No, it was because of his carelessness.
A．that
B．while
C．for
D．as
