脊髓灰质炎瘫痪型中最常见的临床类型是（）
A.隐性感染
B.顿挫型
C.无瘫痪型
D.脊髓型瘫痪
E.脑干型瘫痪
参考答案：D
I enjoy the popular dance "hip-hop", but _____ my father _____ my mother likes it. [ ]
A. both; and
B. not only; but also
C. either; or
D. neither; nor
蛋黄内含有卵磷脂，具有乳化作用。
