接种脊髓灰质炎疫苗后可能发生麻痹的疾病是
A.X-连锁无丙种球蛋白血症B.X-连锁高IgM血症C.X-连锁严重联合免疫缺陷病D.选择性IgA缺陷病E.慢性肉芽肿病
参考答案:A
—Are these his cousins?
—__________. They are his brothers.
A.Yes, they are.
B.No, these aren’t.
C.Yes, these are.
D.No, they aren’t.
试分析现代道德与传统道德的区别